diff --git a/src/index.js b/src/index.js
index 8363dd9..5c8f052 100644
--- a/src/index.js
+++ b/src/index.js
@@ -298,8 +298,6 @@ class CompressionPlugin {
             newInfo.immutable = true;
           }
 
-          CompressionPlugin.emitAsset(compilation, newName, output, newInfo);
-
           if (this.options.deleteOriginalAssets) {
             // eslint-disable-next-line no-param-reassign
             CompressionPlugin.deleteAsset(compilation, name);
@@ -317,6 +315,8 @@ class CompressionPlugin {
               newOriginalInfo
             );
           }
+
+          CompressionPlugin.emitAsset(compilation, newName, output, newInfo);
         })()
       );
     }
diff --git a/test/__snapshots__/deleteOriginalAssets.test.js.snap.webpack4 b/test/__snapshots__/deleteOriginalAssets.test.js.snap.webpack4
index 8f0ebf2..b822eab 100644
--- a/test/__snapshots__/deleteOriginalAssets.test.js.snap.webpack4
+++ b/test/__snapshots__/deleteOriginalAssets.test.js.snap.webpack4
@@ -1,14 +1,60 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
-exports[`"deleteOriginalAssets" option matches snapshot for \`false\` value ({Boolean}): assets 1`] = `
+exports[`"deleteOriginalAssets" option should work and delete original assets: assets 1`] = `
+Array [
+  Array [
+    "09a1a1112c577c2794359715edfcb5ac.png.gz",
+    73160,
+  ],
+  Array [
+    "23fc1d3ac606d117e05a140e0de79806.svg.gz",
+    393,
+  ],
+  Array [
+    "async.async.dcbdb1dd40763448b635.js.gz",
+    171,
+  ],
+  Array [
+    "main.82c6786e32f9c77b44ef.js.gz",
+    3000,
+  ],
+]
+`;
+
+exports[`"deleteOriginalAssets" option should work and delete original assets: errors 1`] = `Array []`;
+
+exports[`"deleteOriginalAssets" option should work and delete original assets: warnings 1`] = `Array []`;
+
+exports[`"deleteOriginalAssets" option should work and do not report errors on duplicate assets when original assets were removed: assets 1`] = `
 Array [
   Array [
     "09a1a1112c577c2794359715edfcb5ac.png",
     78117,
   ],
   Array [
-    "09a1a1112c577c2794359715edfcb5ac.png.gz",
-    73160,
+    "23fc1d3ac606d117e05a140e0de79806.svg",
+    393,
+  ],
+  Array [
+    "async.async.dcbdb1dd40763448b635.js",
+    171,
+  ],
+  Array [
+    "main.82c6786e32f9c77b44ef.js",
+    3000,
+  ],
+]
+`;
+
+exports[`"deleteOriginalAssets" option should work and do not report errors on duplicate assets when original assets were removed: errors 1`] = `Array []`;
+
+exports[`"deleteOriginalAssets" option should work and do not report errors on duplicate assets when original assets were removed: warnings 1`] = `Array []`;
+
+exports[`"deleteOriginalAssets" option should work and keep original assets by default: assets 1`] = `
+Array [
+  Array [
+    "09a1a1112c577c2794359715edfcb5ac.png",
+    78117,
   ],
   Array [
     "23fc1d3ac606d117e05a140e0de79806.svg",
@@ -37,24 +83,40 @@ Array [
 ]
 `;
 
-exports[`"deleteOriginalAssets" option matches snapshot for \`false\` value ({Boolean}): errors 1`] = `Array []`;
+exports[`"deleteOriginalAssets" option should work and keep original assets by default: errors 1`] = `Array []`;
 
-exports[`"deleteOriginalAssets" option matches snapshot for \`false\` value ({Boolean}): warnings 1`] = `Array []`;
+exports[`"deleteOriginalAssets" option should work and keep original assets by default: warnings 1`] = `Array []`;
 
-exports[`"deleteOriginalAssets" option matches snapshot for \`true\` value ({Boolean}): assets 1`] = `
+exports[`"deleteOriginalAssets" option should work and keep original assets: assets 1`] = `
 Array [
+  Array [
+    "09a1a1112c577c2794359715edfcb5ac.png",
+    78117,
+  ],
   Array [
     "09a1a1112c577c2794359715edfcb5ac.png.gz",
     73160,
   ],
+  Array [
+    "23fc1d3ac606d117e05a140e0de79806.svg",
+    672,
+  ],
   Array [
     "23fc1d3ac606d117e05a140e0de79806.svg.gz",
     393,
   ],
+  Array [
+    "async.async.dcbdb1dd40763448b635.js",
+    249,
+  ],
   Array [
     "async.async.dcbdb1dd40763448b635.js.gz",
     171,
   ],
+  Array [
+    "main.82c6786e32f9c77b44ef.js",
+    11645,
+  ],
   Array [
     "main.82c6786e32f9c77b44ef.js.gz",
     3000,
@@ -62,6 +124,37 @@ Array [
 ]
 `;
 
-exports[`"deleteOriginalAssets" option matches snapshot for \`true\` value ({Boolean}): errors 1`] = `Array []`;
+exports[`"deleteOriginalAssets" option should work and keep original assets: errors 1`] = `Array []`;
+
+exports[`"deleteOriginalAssets" option should work and keep original assets: warnings 1`] = `Array []`;
+
+exports[`"deleteOriginalAssets" option should work and report errors on duplicate assets: assets 1`] = `
+Array [
+  Array [
+    "09a1a1112c577c2794359715edfcb5ac.png",
+    78117,
+  ],
+  Array [
+    "23fc1d3ac606d117e05a140e0de79806.svg",
+    393,
+  ],
+  Array [
+    "async.async.dcbdb1dd40763448b635.js",
+    171,
+  ],
+  Array [
+    "main.82c6786e32f9c77b44ef.js",
+    3000,
+  ],
+]
+`;
+
+exports[`"deleteOriginalAssets" option should work and report errors on duplicate assets: errors 1`] = `Array []`;
 
-exports[`"deleteOriginalAssets" option matches snapshot for \`true\` value ({Boolean}): warnings 1`] = `Array []`;
+exports[`"deleteOriginalAssets" option should work and report errors on duplicate assets: warnings 1`] = `
+Array [
+  "Error: Conflict: Multiple assets emit different content to the same filename 23fc1d3ac606d117e05a140e0de79806.svg",
+  "Error: Conflict: Multiple assets emit different content to the same filename async.async.dcbdb1dd40763448b635.js",
+  "Error: Conflict: Multiple assets emit different content to the same filename main.82c6786e32f9c77b44ef.js",
+]
+`;
diff --git a/test/__snapshots__/deleteOriginalAssets.test.js.snap.webpack5 b/test/__snapshots__/deleteOriginalAssets.test.js.snap.webpack5
index b1a28ee..4c2564c 100644
--- a/test/__snapshots__/deleteOriginalAssets.test.js.snap.webpack5
+++ b/test/__snapshots__/deleteOriginalAssets.test.js.snap.webpack5
@@ -1,14 +1,60 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
-exports[`"deleteOriginalAssets" option matches snapshot for \`false\` value ({Boolean}): assets 1`] = `
+exports[`"deleteOriginalAssets" option should work and delete original assets: assets 1`] = `
+Array [
+  Array [
+    "09a1a1112c577c2794359715edfcb5ac.png.gz",
+    73160,
+  ],
+  Array [
+    "23fc1d3ac606d117e05a140e0de79806.svg.gz",
+    393,
+  ],
+  Array [
+    "async.async.9325220d444b0d653c03.js.gz",
+    179,
+  ],
+  Array [
+    "main.7cdd8fe3ccdaedc3726c.js.gz",
+    3933,
+  ],
+]
+`;
+
+exports[`"deleteOriginalAssets" option should work and delete original assets: errors 1`] = `Array []`;
+
+exports[`"deleteOriginalAssets" option should work and delete original assets: warnings 1`] = `Array []`;
+
+exports[`"deleteOriginalAssets" option should work and do not report errors on duplicate assets when original assets were removed: assets 1`] = `
 Array [
   Array [
     "09a1a1112c577c2794359715edfcb5ac.png",
     78117,
   ],
   Array [
-    "09a1a1112c577c2794359715edfcb5ac.png.gz",
-    73160,
+    "23fc1d3ac606d117e05a140e0de79806.svg",
+    393,
+  ],
+  Array [
+    "async.async.9325220d444b0d653c03.js",
+    179,
+  ],
+  Array [
+    "main.7cdd8fe3ccdaedc3726c.js",
+    3933,
+  ],
+]
+`;
+
+exports[`"deleteOriginalAssets" option should work and do not report errors on duplicate assets when original assets were removed: errors 1`] = `Array []`;
+
+exports[`"deleteOriginalAssets" option should work and do not report errors on duplicate assets when original assets were removed: warnings 1`] = `Array []`;
+
+exports[`"deleteOriginalAssets" option should work and keep original assets by default: assets 1`] = `
+Array [
+  Array [
+    "09a1a1112c577c2794359715edfcb5ac.png",
+    78117,
   ],
   Array [
     "23fc1d3ac606d117e05a140e0de79806.svg",
@@ -37,24 +83,40 @@ Array [
 ]
 `;
 
-exports[`"deleteOriginalAssets" option matches snapshot for \`false\` value ({Boolean}): errors 1`] = `Array []`;
+exports[`"deleteOriginalAssets" option should work and keep original assets by default: errors 1`] = `Array []`;
 
-exports[`"deleteOriginalAssets" option matches snapshot for \`false\` value ({Boolean}): warnings 1`] = `Array []`;
+exports[`"deleteOriginalAssets" option should work and keep original assets by default: warnings 1`] = `Array []`;
 
-exports[`"deleteOriginalAssets" option matches snapshot for \`true\` value ({Boolean}): assets 1`] = `
+exports[`"deleteOriginalAssets" option should work and keep original assets: assets 1`] = `
 Array [
+  Array [
+    "09a1a1112c577c2794359715edfcb5ac.png",
+    78117,
+  ],
   Array [
     "09a1a1112c577c2794359715edfcb5ac.png.gz",
     73160,
   ],
+  Array [
+    "23fc1d3ac606d117e05a140e0de79806.svg",
+    672,
+  ],
   Array [
     "23fc1d3ac606d117e05a140e0de79806.svg.gz",
     393,
   ],
+  Array [
+    "async.async.9325220d444b0d653c03.js",
+    265,
+  ],
   Array [
     "async.async.9325220d444b0d653c03.js.gz",
     179,
   ],
+  Array [
+    "main.7cdd8fe3ccdaedc3726c.js",
+    16494,
+  ],
   Array [
     "main.7cdd8fe3ccdaedc3726c.js.gz",
     3933,
@@ -62,6 +124,37 @@ Array [
 ]
 `;
 
-exports[`"deleteOriginalAssets" option matches snapshot for \`true\` value ({Boolean}): errors 1`] = `Array []`;
+exports[`"deleteOriginalAssets" option should work and keep original assets: errors 1`] = `Array []`;
+
+exports[`"deleteOriginalAssets" option should work and keep original assets: warnings 1`] = `Array []`;
+
+exports[`"deleteOriginalAssets" option should work and report errors on duplicate assets: assets 1`] = `
+Array [
+  Array [
+    "09a1a1112c577c2794359715edfcb5ac.png",
+    78117,
+  ],
+  Array [
+    "23fc1d3ac606d117e05a140e0de79806.svg",
+    393,
+  ],
+  Array [
+    "async.async.9325220d444b0d653c03.js",
+    179,
+  ],
+  Array [
+    "main.7cdd8fe3ccdaedc3726c.js",
+    3933,
+  ],
+]
+`;
+
+exports[`"deleteOriginalAssets" option should work and report errors on duplicate assets: errors 1`] = `
+Array [
+  "Error: Conflict: Multiple assets emit different content to the same filename 23fc1d3ac606d117e05a140e0de79806.svg",
+  "Error: Conflict: Multiple assets emit different content to the same filename async.async.9325220d444b0d653c03.js",
+  "Error: Conflict: Multiple assets emit different content to the same filename main.7cdd8fe3ccdaedc3726c.js",
+]
+`;
 
-exports[`"deleteOriginalAssets" option matches snapshot for \`true\` value ({Boolean}): warnings 1`] = `Array []`;
+exports[`"deleteOriginalAssets" option should work and report errors on duplicate assets: warnings 1`] = `Array []`;
diff --git a/test/__snapshots__/overwriteOriginalAssets.test.js.snap.webpack4 b/test/__snapshots__/overwriteOriginalAssets.test.js.snap.webpack4
new file mode 100644
index 0000000..54fa1af
--- /dev/null
+++ b/test/__snapshots__/overwriteOriginalAssets.test.js.snap.webpack4
@@ -0,0 +1,88 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`"overwriteOriginalAssets" option matches snapshot for \`false\` value ({Boolean}): assets 1`] = `
+Array [
+  Array [
+    "09a1a1112c577c2794359715edfcb5ac.png",
+    78117,
+  ],
+  Array [
+    "23fc1d3ac606d117e05a140e0de79806.svg",
+    672,
+  ],
+  Array [
+    "async.js",
+    249,
+  ],
+  Array [
+    "main.js",
+    11579,
+  ],
+]
+`;
+
+exports[`"overwriteOriginalAssets" option matches snapshot for \`false\` value ({Boolean}): errors 1`] = `Array []`;
+
+exports[`"overwriteOriginalAssets" option matches snapshot for \`false\` value ({Boolean}): warnings 1`] = `
+Array [
+  "Error: Conflict: Multiple assets emit different content to the same filename 23fc1d3ac606d117e05a140e0de79806.svg",
+  "Error: Conflict: Multiple assets emit different content to the same filename async.js",
+  "Error: Conflict: Multiple assets emit different content to the same filename main.js",
+]
+`;
+
+exports[`"overwriteOriginalAssets" option matches snapshot for \`true\` value ({Boolean}): assets 1`] = `
+Array [
+  Array [
+    "09a1a1112c577c2794359715edfcb5ac.png",
+    78117,
+  ],
+  Array [
+    "23fc1d3ac606d117e05a140e0de79806.svg",
+    672,
+  ],
+  Array [
+    "async.js",
+    249,
+  ],
+  Array [
+    "main.js",
+    11579,
+  ],
+]
+`;
+
+exports[`"overwriteOriginalAssets" option matches snapshot for \`true\` value ({Boolean}): errors 1`] = `Array []`;
+
+exports[`"overwriteOriginalAssets" option matches snapshot for \`true\` value ({Boolean}): warnings 1`] = `Array []`;
+
+exports[`"overwriteOriginalAssets" option matches snapshot for not specify value: assets 1`] = `
+Array [
+  Array [
+    "09a1a1112c577c2794359715edfcb5ac.png",
+    78117,
+  ],
+  Array [
+    "23fc1d3ac606d117e05a140e0de79806.svg",
+    672,
+  ],
+  Array [
+    "async.js",
+    249,
+  ],
+  Array [
+    "main.js",
+    11579,
+  ],
+]
+`;
+
+exports[`"overwriteOriginalAssets" option matches snapshot for not specify value: errors 1`] = `Array []`;
+
+exports[`"overwriteOriginalAssets" option matches snapshot for not specify value: warnings 1`] = `
+Array [
+  "Error: Conflict: Multiple assets emit different content to the same filename 23fc1d3ac606d117e05a140e0de79806.svg",
+  "Error: Conflict: Multiple assets emit different content to the same filename async.js",
+  "Error: Conflict: Multiple assets emit different content to the same filename main.js",
+]
+`;
diff --git a/test/__snapshots__/overwriteOriginalAssets.test.js.snap.webpack5 b/test/__snapshots__/overwriteOriginalAssets.test.js.snap.webpack5
new file mode 100644
index 0000000..a5516ba
--- /dev/null
+++ b/test/__snapshots__/overwriteOriginalAssets.test.js.snap.webpack5
@@ -0,0 +1,76 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`"overwriteOriginalAssets" option matches snapshot for \`false\` value ({Boolean}): assets 1`] = `
+Array [
+  Array [
+    "09a1a1112c577c2794359715edfcb5ac.png",
+    78117,
+  ],
+  Array [
+    "23fc1d3ac606d117e05a140e0de79806.svg",
+    393,
+  ],
+  Array [
+    "async.js",
+    179,
+  ],
+  Array [
+    "main.js",
+    3906,
+  ],
+]
+`;
+
+exports[`"overwriteOriginalAssets" option matches snapshot for \`false\` value ({Boolean}): errors 1`] = `Array []`;
+
+exports[`"overwriteOriginalAssets" option matches snapshot for \`false\` value ({Boolean}): warnings 1`] = `Array []`;
+
+exports[`"overwriteOriginalAssets" option matches snapshot for \`true\` value ({Boolean}): assets 1`] = `
+Array [
+  Array [
+    "09a1a1112c577c2794359715edfcb5ac.png",
+    78117,
+  ],
+  Array [
+    "23fc1d3ac606d117e05a140e0de79806.svg",
+    393,
+  ],
+  Array [
+    "async.js",
+    179,
+  ],
+  Array [
+    "main.js",
+    3906,
+  ],
+]
+`;
+
+exports[`"overwriteOriginalAssets" option matches snapshot for \`true\` value ({Boolean}): errors 1`] = `Array []`;
+
+exports[`"overwriteOriginalAssets" option matches snapshot for \`true\` value ({Boolean}): warnings 1`] = `Array []`;
+
+exports[`"overwriteOriginalAssets" option matches snapshot for not specify value: assets 1`] = `
+Array [
+  Array [
+    "09a1a1112c577c2794359715edfcb5ac.png",
+    78117,
+  ],
+  Array [
+    "23fc1d3ac606d117e05a140e0de79806.svg",
+    393,
+  ],
+  Array [
+    "async.js",
+    179,
+  ],
+  Array [
+    "main.js",
+    3906,
+  ],
+]
+`;
+
+exports[`"overwriteOriginalAssets" option matches snapshot for not specify value: errors 1`] = `Array []`;
+
+exports[`"overwriteOriginalAssets" option matches snapshot for not specify value: warnings 1`] = `Array []`;
diff --git a/test/deleteOriginalAssets.test.js b/test/deleteOriginalAssets.test.js
index 5da1f5e..e0792e4 100644
--- a/test/deleteOriginalAssets.test.js
+++ b/test/deleteOriginalAssets.test.js
@@ -18,10 +18,22 @@ describe('"deleteOriginalAssets" option', () => {
     return removeCache();
   });
 
-  it('matches snapshot for `true` value ({Boolean})', async () => {
+  it('should work and keep original assets by default', async () => {
+    compiler = getCompiler('./entry.js');
+
+    new CompressionPlugin().apply(compiler);
+
+    const stats = await compile(compiler);
+
+    expect(getAssetsNameAndSize(stats)).toMatchSnapshot('assets');
+    expect(getWarnings(stats)).toMatchSnapshot('warnings');
+    expect(getErrors(stats)).toMatchSnapshot('errors');
+  });
+
+  it('should work and keep original assets', async () => {
     new CompressionPlugin({
       minRatio: 1,
-      deleteOriginalAssets: true,
+      deleteOriginalAssets: false,
     }).apply(compiler);
 
     const stats = await compile(compiler);
@@ -31,10 +43,39 @@ describe('"deleteOriginalAssets" option', () => {
     expect(getErrors(stats)).toMatchSnapshot('errors');
   });
 
-  it('matches snapshot for `false` value ({Boolean})', async () => {
+  it('should work and delete original assets', async () => {
     new CompressionPlugin({
       minRatio: 1,
-      deleteOriginalAssets: false,
+      deleteOriginalAssets: true,
+    }).apply(compiler);
+
+    const stats = await compile(compiler);
+
+    expect(getAssetsNameAndSize(stats)).toMatchSnapshot('assets');
+    expect(getWarnings(stats)).toMatchSnapshot('warnings');
+    expect(getErrors(stats)).toMatchSnapshot('errors');
+  });
+
+  it('should work and report errors on duplicate assets', async () => {
+    compiler = getCompiler('./entry.js');
+
+    new CompressionPlugin({
+      filename: '[path][base]',
+    }).apply(compiler);
+
+    const stats = await compile(compiler);
+
+    expect(getAssetsNameAndSize(stats)).toMatchSnapshot('assets');
+    expect(getWarnings(stats)).toMatchSnapshot('warnings');
+    expect(getErrors(stats)).toMatchSnapshot('errors');
+  });
+
+  it('should work and do not report errors on duplicate assets when original assets were removed', async () => {
+    compiler = getCompiler('./entry.js');
+
+    new CompressionPlugin({
+      filename: '[path][base]',
+      deleteOriginalAssets: true,
     }).apply(compiler);
 
     const stats = await compile(compiler);
diff --git a/test/helpers/getErrors.js b/test/helpers/getErrors.js
index 716fbbb..085bae5 100644
--- a/test/helpers/getErrors.js
+++ b/test/helpers/getErrors.js
@@ -1,5 +1,5 @@
 import normalizeErrors from './normalizeErrors';
 
 export default (stats) => {
-  return normalizeErrors(stats.compilation.errors);
+  return normalizeErrors(stats.compilation.errors).sort();
 };
diff --git a/test/helpers/getWarnings.js b/test/helpers/getWarnings.js
index c8a09d6..9e09c82 100644
--- a/test/helpers/getWarnings.js
+++ b/test/helpers/getWarnings.js
@@ -1,5 +1,5 @@
 import normalizeErrors from './normalizeErrors';
 
 export default (stats) => {
-  return normalizeErrors(stats.compilation.warnings);
+  return normalizeErrors(stats.compilation.warnings).sort();
 };