diff --git a/services/surfaceflinger/Layer.h b/services/surfaceflinger/Layer.h
index d30961a..5e85ebe 100644
--- a/services/surfaceflinger/Layer.h
+++ b/services/surfaceflinger/Layer.h
@@ -841,6 +841,8 @@
 
     // Can only be accessed with the SF state lock held.
     bool mLayerDetached{false};
+    // Can only be accessed with the SF state lock held.
+    bool mChildrenChanged{false};
 
 private:
     /**