diff --git a/library/src/main/java/com/owncloud/android/lib/common/network/ChunkFromFileChannelRequestEntity.java b/library/src/main/java/com/owncloud/android/lib/common/network/ChunkFromFileChannelRequestEntity.java
index c0d684220..682cb9dcb 100644
--- a/library/src/main/java/com/owncloud/android/lib/common/network/ChunkFromFileChannelRequestEntity.java
+++ b/library/src/main/java/com/owncloud/android/lib/common/network/ChunkFromFileChannelRequestEntity.java
@@ -103,7 +103,7 @@ public void writeRequest(final OutputStream out) throws IOException {
             if (size == 0) {
                 size = -1;
             }
-            long maxCount = Math.min(mOffset + length - 1, mChannel.size());
+            long maxCount = Math.min(mOffset + length, mChannel.size());
             while (mChannel.position() < maxCount) {
                 readCount = mChannel.read(mBuffer);
                 try {