diff --git a/src/vim9class.c b/src/vim9class.c
index 2c5e1df..b19f8c9 100644
--- a/src/vim9class.c
+++ b/src/vim9class.c
@@ -2342,7 +2342,7 @@
     }
 
     char_u *argp = name_end;
-    int ret = get_func_arguments(&argp, evalarg, 0, argvars, &argcount);
+    int ret = get_func_arguments(&argp, evalarg, 0, argvars, &argcount, FALSE);
     if (ret == FAIL)
 	return FAIL;