diff --git a/services/tests/wmtests/src/com/android/server/wm/SizeCompatTests.java b/services/tests/wmtests/src/com/android/server/wm/SizeCompatTests.java
index 5d2c3d97e8465..e4a591ea4fe28 100644
--- a/services/tests/wmtests/src/com/android/server/wm/SizeCompatTests.java
+++ b/services/tests/wmtests/src/com/android/server/wm/SizeCompatTests.java
@@ -446,7 +446,7 @@ public class SizeCompatTests extends WindowTestsBase {
                 .setLaunchedFromUid(mActivity.getUid())
                 .setScreenOrientation(SCREEN_ORIENTATION_PORTRAIT)
                 .build();
-        doReturn(true).when(translucentActivity).fillsParent();
+        doReturn(false).when(translucentActivity).fillsParent();
         mTask.addChild(translucentActivity);
         // It should not be in SCM
         assertFalse(translucentActivity.inSizeCompatMode());