diff --git a/modules/gralloc/gr.h b/modules/gralloc/gr.h
index ac7e967..14fe6a0 100644
--- a/modules/gralloc/gr.h
+++ b/modules/gralloc/gr.h
@@ -36,7 +36,7 @@
     return (x + (PAGE_SIZE-1)) & ~(PAGE_SIZE-1);
 }
 
-int mapFrameBufferLocked(struct private_module_t* module);
+int mapFrameBufferLocked(struct private_module_t* module, int format);
 int terminateBuffer(gralloc_module_t const* module, private_handle_t* hnd);
 int mapBuffer(gralloc_module_t const* module, private_handle_t* hnd);