diff --git a/sky/engine/core/window/window.h b/sky/engine/core/window/window.h
index 433f6dc24f2b9f560211c4c8fc5df3c6c950ae22..8aec77838594dc58be33dfe964e6d1b3dee3bae8 100644
--- a/sky/engine/core/window/window.h
+++ b/sky/engine/core/window/window.h
@@ -7,7 +7,6 @@
 
 #include "lib/ftl/time/time_point.h"
 #include "lib/tonic/dart_persistent_value.h"
-#include "flutter/sky/engine/wtf/text/WTFString.h"
 #include "flutter/services/engine/sky_engine.mojom.h"
 #include "flutter/services/pointer/pointer.mojom.h"