diff --git a/src/utils/__tests__/checkTemplate.js b/src/utils/__tests__/checkTemplate.js
index 9041266..9d7c27e 100644
--- a/src/utils/__tests__/checkTemplate.js
+++ b/src/utils/__tests__/checkTemplate.js
@@ -246,3 +246,57 @@ test("parse v-for nested expressions and add their vars to available data", () =
     })
   ).not.toThrow();
 });
+
+test("throw error when mixed case attributes", () => {
+  expect(() =>
+    checkTemplate({
+      template: `<div aA="as">
+          <div/>
+        </div>`,
+    })
+  ).toThrowError("[VueLive] Invalid attribute name: aA");
+});
+
+test("throw error when invalid character attributes", () => {
+  expect(() =>
+    checkTemplate({
+      template: `<div $s="as">
+          <div/>
+        </div>`,
+    })
+  ).toThrowError("[VueLive] Invalid attribute name: $s");
+});
+
+test("throw error when invalid character attributes", () => {
+  expect(() =>
+    checkTemplate({
+      template: `<div $s="as">
+          <div/>
+        </div>`,
+    })
+  ).toThrowError("[VueLive] Invalid attribute name: $s");
+});
+
+test("throw error when invalid character attributes", () => {
+  expect(() =>
+    checkTemplate({
+      template: `<div s:tata="as">
+          <div/>
+        </div>`,
+    })
+  ).toThrowError("[VueLive] Invalid attribute name: s:tata");
+});
+
+test("not error when all attributes are valid", () => {
+  expect(() =>
+    checkTemplate({
+      template: `<div>
+          <div ja-da="0" />
+          <div v-bind:da="0" />
+          <div v-on:da="0" />
+          <div :da="0" />
+          <div @da="co()" />
+        </div>`,
+    })
+  ).not.toThrow();
+});
diff --git a/src/utils/__tests__/requireAtRuntime.unit.js b/src/utils/__tests__/requireAtRuntime.js
similarity index 100%
rename from src/utils/__tests__/requireAtRuntime.unit.js
rename to src/utils/__tests__/requireAtRuntime.js
diff --git a/src/utils/checkTemplate.js b/src/utils/checkTemplate.js
index 762d38b..fe7cc93 100644
--- a/src/utils/checkTemplate.js
+++ b/src/utils/checkTemplate.js
@@ -49,7 +49,7 @@ export default function($options, checkVariableAvailability) {
       const templateVars = [];
       if (templateAst.type === ELEMENT) {
         templateAst.props.forEach((attr) => {
-          if (!/^[a-z,-,:]+$/g.test(attr.name)) {
+          if (!/^[a-z-]+$/g.test(attr.name)) {
             throw new VueLiveParseTemplateAttrError(
               "[VueLive] Invalid attribute name: " + attr.name,
               attr.loc