diff --git a/packages/SystemUI/src/com/android/systemui/flags/Flags.java b/packages/SystemUI/src/com/android/systemui/flags/Flags.java
index b590412dd48c8..2db3de173257e 100644
--- a/packages/SystemUI/src/com/android/systemui/flags/Flags.java
+++ b/packages/SystemUI/src/com/android/systemui/flags/Flags.java
@@ -16,6 +16,7 @@
 
 package com.android.systemui.flags;
 
+import com.android.internal.annotations.Keep;
 import com.android.systemui.R;
 
 import java.lang.reflect.Field;
@@ -154,6 +155,7 @@ public class Flags {
             new BooleanFlag(1000, true);
 
     // 1100 - windowing
+    @Keep
     public static final SysPropBooleanFlag WM_ENABLE_SHELL_TRANSITIONS =
             new SysPropBooleanFlag(1100, "persist.wm.debug.shell_transit", false);