diff --git a/services/java/com/android/server/WindowManagerService.java b/services/java/com/android/server/WindowManagerService.java
index d209cfaa1982e..2f5b89c33caf2 100644
--- a/services/java/com/android/server/WindowManagerService.java
+++ b/services/java/com/android/server/WindowManagerService.java
@@ -10986,6 +10986,7 @@ public class WindowManagerService extends IWindowManager.Stub
                 try {
                     mDimSurface = new Surface(session, 0, -1, 16, 16, PixelFormat.OPAQUE,
                             Surface.FX_SURFACE_DIM);
+                    mDimSurface.setAlpha(0.0f);
                 } catch (Exception e) {
                     Log.e(TAG, "Exception creating Dim surface", e);
                 }