diff --git a/src/evalvars.c b/src/evalvars.c
index 654eeff..572e5d5 100644
--- a/src/evalvars.c
+++ b/src/evalvars.c
@@ -1464,7 +1464,8 @@
     {
 	lval_T	lv;
 
-	p = get_lval(arg, tv, &lv, FALSE, FALSE, 0, FNE_CHECK_START);
+	p = get_lval(arg, tv, &lv, FALSE, FALSE,
+		(flags & ASSIGN_NO_DECL) ? GLV_NO_DECL : 0, FNE_CHECK_START);
 	if (p != NULL && lv.ll_name != NULL)
 	{
 	    if (endchars != NULL && vim_strchr(endchars,