diff --git a/include/gui/SurfaceComposerClient.h b/include/gui/SurfaceComposerClient.h
index 8302160..807d85b 100644
--- a/include/gui/SurfaceComposerClient.h
+++ b/include/gui/SurfaceComposerClient.h
@@ -148,7 +148,7 @@
     status_t    setTransparentRegionHint(const sp<IBinder>& id, const Region& transparent);
     status_t    setLayer(const sp<IBinder>& id, int32_t layer);
     status_t    setAlpha(const sp<IBinder>& id, float alpha=1.0f);
-    status_t    setMatrix(const sp<IBinder>& id, float dsdx, float dtdx, float dsdy, float dtdy);
+    status_t    setMatrix(const sp<IBinder>& id, float dsdx, float dtdx, float dtdy, float dsdy);
     status_t    setPosition(const sp<IBinder>& id, float x, float y);
     status_t    setSize(const sp<IBinder>& id, uint32_t w, uint32_t h);
     status_t    setCrop(const sp<IBinder>& id, const Rect& crop);