diff --git a/services/core/java/com/android/server/wm/WindowSurfacePlacer.java b/services/core/java/com/android/server/wm/WindowSurfacePlacer.java
index 3c13a1e0691dc..cb1b2e6abc585 100644
--- a/services/core/java/com/android/server/wm/WindowSurfacePlacer.java
+++ b/services/core/java/com/android/server/wm/WindowSurfacePlacer.java
@@ -693,8 +693,7 @@ class WindowSurfacePlacer {
             SurfaceControl surfaceControl = new SurfaceControl(mService.mFxSession,
                     "thumbnail anim", dirty.width(), dirty.height(),
                     PixelFormat.TRANSLUCENT, SurfaceControl.HIDDEN,
-                    appToken.windowType,
-                    window != null ? window.mOwnerUid : Binder.getCallingUid());
+                    appToken.windowType, window.mOwnerUid);
             surfaceControl.setLayerStack(display.getLayerStack());
             if (SHOW_TRANSACTIONS) {
                 Slog.i(TAG, "  THUMBNAIL " + surfaceControl + ": CREATE");