diff --git a/include/gui/Surface.h b/include/gui/Surface.h
index ed2331b..3f46460 100644
--- a/include/gui/Surface.h
+++ b/include/gui/Surface.h
@@ -109,6 +109,9 @@
     // See IGraphicBufferProducer::getConsumerName
     String8 getConsumerName() const;
 
+    // See IGraphicBufferProducer::getNextFrameNumber
+    uint64_t getNextFrameNumber() const;
+
 protected:
     virtual ~Surface();