diff --git a/library/src/main/java/com/google/android/exoplayer/upstream/DataSourceInputStream.java b/library/src/main/java/com/google/android/exoplayer/upstream/DataSourceInputStream.java
index 8ed35c3ea8..e0a01f3a9a 100644
--- a/library/src/main/java/com/google/android/exoplayer/upstream/DataSourceInputStream.java
+++ b/library/src/main/java/com/google/android/exoplayer/upstream/DataSourceInputStream.java
@@ -46,7 +46,7 @@ public class DataSourceInputStream extends InputStream {
   @Override
   public int read() throws IOException {
     read(singleByteArray);
-    return singleByteArray[0];
+    return singleByteArray[0] & 0xFF;
   }
 
   @Override