diff --git a/src/eval.c b/src/eval.c
index f47b096..963d9db 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -10031,7 +10031,7 @@
 	if ((item = dict_find(dict, (char_u *)"timeout", -1)) != NULL)
 	    timeout = get_tv_number(&item->di_tv);
     }
-    if (waittime < 0 || timeout < 0)
+    if (timeout < 0)
     {
 	EMSG(_(e_invarg));
 	return;