diff --git a/src/eval.c b/src/eval.c
index 0d24f76..2cde642 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -1311,7 +1311,8 @@
 
 	    lp->ll_dict = NULL;
 	    lp->ll_list = lp->ll_tv->vval.v_list;
-	    lp->ll_li = check_range_index_one(lp->ll_list, &lp->ll_n1, quiet);
+	    lp->ll_li = check_range_index_one(lp->ll_list, &lp->ll_n1,
+				     (flags & GLV_ASSIGN_WITH_OP) == 0, quiet);
 	    if (lp->ll_li == NULL)
 	    {
 		clear_tv(&var2);