diff --git a/libs/hwui/Readback.h b/libs/hwui/Readback.h
index da25269..d0d748f 100644
--- a/libs/hwui/Readback.h
+++ b/libs/hwui/Readback.h
@@ -56,8 +56,7 @@
 
 private:
     CopyResult copySurfaceIntoLegacy(ANativeWindow* window, const Rect& srcRect, SkBitmap* bitmap);
-    CopyResult copyImageInto(const sk_sp<SkImage>& image, Matrix4& texTransform,
-                             const Rect& srcRect, SkBitmap* bitmap);
+    CopyResult copyImageInto(const sk_sp<SkImage>& image, const Rect& srcRect, SkBitmap* bitmap);
 
     bool copyLayerInto(Layer* layer, const SkRect* srcRect, const SkRect* dstRect,
                        SkBitmap* bitmap);