diff --git a/src/getchar.c b/src/getchar.c
index 60a2a9b..4c38cd7 100644
--- a/src/getchar.c
+++ b/src/getchar.c
@@ -1201,8 +1201,8 @@
 may_sync_undo()
 {
     if ((!(State & (INSERT + CMDLINE)) || arrow_used)
-	    && scriptin[curscript] == NULL && no_u_sync == 0)
-	u_sync();
+					       && scriptin[curscript] == NULL)
+	u_sync(FALSE);
 }
 
 /*