diff -ur grace-5.1.25.orig/src/utils.c grace-5.1.25/src/utils.c
--- grace-5.1.25.orig/src/utils.c	2022-12-22 10:40:39.391625263 +0100
+++ grace-5.1.25/src/utils.c	2022-12-22 10:41:24.732188992 +0100
@@ -1391,7 +1391,7 @@
     update_app_title();
 }
 
-void lock_dirtystate(flag)
+void lock_dirtystate(int flag)
 {
     dirtystate_lock = flag;
 }