diff --git a/services/surfaceflinger/BufferLayer.h b/services/surfaceflinger/BufferLayer.h
index a4c21f4..34d11ac 100644
--- a/services/surfaceflinger/BufferLayer.h
+++ b/services/surfaceflinger/BufferLayer.h
@@ -153,7 +153,7 @@
     bool onPreComposition(nsecs_t) override;
     void preparePerFrameCompositionState() override;
 
-    static bool getOpacityForFormat(uint32_t format);
+    static bool getOpacityForFormat(PixelFormat format);
 
     // from graphics API
     const uint32_t mTextureName;