diff --git a/media/libstagefright/include/ThrottledSource.h b/media/libstagefright/include/ThrottledSource.h
index 8928a4a6549c0..7fe7c0676c558 100644
--- a/media/libstagefright/include/ThrottledSource.h
+++ b/media/libstagefright/include/ThrottledSource.h
@@ -35,6 +35,11 @@ struct ThrottledSource : public DataSource {
     virtual status_t getSize(off64_t *size);
     virtual uint32_t flags();
 
+    virtual String8 getMIMEType() const {
+        return mSource->getMIMEType();
+    }
+
+
 private:
     Mutex mLock;