diff --git a/include/gui/BufferQueueConsumer.h b/include/gui/BufferQueueConsumer.h
index 7f24c83..1912ed0 100644
--- a/include/gui/BufferQueueConsumer.h
+++ b/include/gui/BufferQueueConsumer.h
@@ -93,7 +93,7 @@
     // but have not yet been released by the consumer.
     //
     // This should be called from the onBuffersReleased() callback.
-    virtual status_t getReleasedBuffers(uint32_t* outSlotMask);
+    virtual status_t getReleasedBuffers(uint64_t* outSlotMask);
 
     // setDefaultBufferSize is used to set the size of buffers returned by
     // dequeueBuffer when a width and height of zero is requested.  Default