diff --git a/okdownload/src/main/java/com/liulishuo/okdownload/core/breakpoint/BreakpointInfo.java b/okdownload/src/main/java/com/liulishuo/okdownload/core/breakpoint/BreakpointInfo.java
index dd52c625..90f0615c 100644
--- a/okdownload/src/main/java/com/liulishuo/okdownload/core/breakpoint/BreakpointInfo.java
+++ b/okdownload/src/main/java/com/liulishuo/okdownload/core/breakpoint/BreakpointInfo.java
@@ -129,21 +129,14 @@ public long getTotalOffset() {
         final int count = list.size();
         for (int i = 0; i < count; i++) {
             final BlockInfo info = list.get(i);
-            long cOffset = info.getCurrentOffset();
-            if (i == 0) {
-                if (cOffset > info.getContentLength()) {
-                    offset = info.getContentLength();
-                } else {
-                    offset = cOffset;
-                }
-            } else {
-                offset += cOffset;
-            }
+            offset += info.getCurrentOffset();
         }
         return offset;
     }
 
     public long getTotalLength() {
+        if (isChunked()) return getTotalOffset();
+
         long length = 0;
         ArrayList<BlockInfo> list = (ArrayList<BlockInfo>) ((ArrayList) blockInfoList).clone();
         for (BlockInfo info : list) {
diff --git a/okdownload/src/test/java/com/liulishuo/okdownload/core/breakpoint/BreakpointInfoTest.java b/okdownload/src/test/java/com/liulishuo/okdownload/core/breakpoint/BreakpointInfoTest.java
index 5023b5dd..6fe4889c 100644
--- a/okdownload/src/test/java/com/liulishuo/okdownload/core/breakpoint/BreakpointInfoTest.java
+++ b/okdownload/src/test/java/com/liulishuo/okdownload/core/breakpoint/BreakpointInfoTest.java
@@ -23,7 +23,9 @@
 import java.io.File;
 
 import static org.assertj.core.api.Java6Assertions.assertThat;
+import static org.mockito.Mockito.doReturn;
 import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.spy;
 import static org.mockito.Mockito.when;
 
 public class BreakpointInfoTest {
@@ -54,12 +56,20 @@ public void copyNotClone() {
     @Test
     public void getTotalOffset() {
         BreakpointInfo info = new BreakpointInfo(0, "", new File(""), null);
-        info.addBlock(new BlockInfo(0, 10, 12));
+        info.addBlock(new BlockInfo(0, 10, 10));
         info.addBlock(new BlockInfo(10, 18, 18));
         info.addBlock(new BlockInfo(28, 66, 66));
         assertThat(info.getTotalOffset()).isEqualTo(94);
     }
 
+    @Test
+    public void getTotalLength_chunked() {
+        BreakpointInfo info = spy(new BreakpointInfo(0, "", new File(""), null));
+        when(info.isChunked()).thenReturn(true);
+        doReturn(1L).when(info).getTotalOffset();
+        assertThat(info.getTotalLength()).isEqualTo(1L);
+    }
+
     @Test
     public void getTotalLength() {
         BreakpointInfo info = new BreakpointInfo(0, "", new File(""), null);