diff --git a/mozilla/mail/base/content/mailWindowOverlay.xul b/mozilla/mail/base/content/mailWindowOverlay.xul
index 7355b0f8d49..a9cd06a2243 100644
--- a/mozilla/mail/base/content/mailWindowOverlay.xul
+++ b/mozilla/mail/base/content/mailWindowOverlay.xul
@@ -336,6 +336,11 @@
+#ifdef XP_WIN
+
+#elifdef XP_UNIX
+
+#endif
+#ifdef MOZ_WIDGET_GTK2
+
+#else
+#endif
#ifdef XP_MACOSX