diff --git a/src/structs.h b/src/structs.h
index 58152b9..7fe97fd 100644
--- a/src/structs.h
+++ b/src/structs.h
@@ -4207,6 +4207,9 @@
 
     int		want_full_screen;
     int		not_a_term;		// no warning for missing term?
+#ifdef FEAT_GUI
+    char_u	*gui_dialog_file;	// file to write dialog text in
+#endif
     int		tty_fail;		// exit if not a tty
     char_u	*term;			// specified terminal name
 #ifdef FEAT_CRYPT