diff --git a/video_engine/vie_sync_module.h b/video_engine/vie_sync_module.h
index 8f10c61..94dae57 100644
--- a/video_engine/vie_sync_module.h
+++ b/video_engine/vie_sync_module.h
@@ -41,7 +41,7 @@
   int VoiceChannel();
 
   // Set target delay for buffering mode (0 = real-time mode).
-  void SetTargetBufferingDelay(int target_delay_ms);
+  int SetTargetBufferingDelay(int target_delay_ms);
 
   // Implements Module.
   virtual WebRtc_Word32 TimeUntilNextProcess();