diff --git a/include/gui/SurfaceControl.h b/include/gui/SurfaceControl.h
index f70888d..9268e7d 100644
--- a/include/gui/SurfaceControl.h
+++ b/include/gui/SurfaceControl.h
@@ -57,7 +57,7 @@
     
     status_t    setLayerStack(int32_t layerStack);
     status_t    setLayer(int32_t layer);
-    status_t    setPosition(int32_t x, int32_t y);
+    status_t    setPosition(float x, float y);
     status_t    setSize(uint32_t w, uint32_t h);
     status_t    hide();
     status_t    show();