diff --git a/src/eval.c b/src/eval.c
index 654e418..a8e9463 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -2945,6 +2945,23 @@
 	;
     else if (lp->ll_range)
     {
+	listitem_T *ll_li = lp->ll_li;
+	int ll_n1 = lp->ll_n1;
+
+	/*
+	 * Check whether any of the list items is locked
+	 */
+	for (ri = rettv->vval.v_list->lv_first; ri != NULL; )
+	{
+	    if (tv_check_lock(ll_li->li_tv.v_lock, lp->ll_name))
+		return;
+	    ri = ri->li_next;
+	    if (ri == NULL || (!lp->ll_empty2 && lp->ll_n2 == ll_n1))
+		break;
+	    ll_li = ll_li->li_next;
+	    ++ll_n1;
+	}
+
 	/*
 	 * Assign the List values to the list items.
 	 */
@@ -3646,6 +3663,17 @@
     else if (lp->ll_range)
     {
 	listitem_T    *li;
+	listitem_T    *ll_li = lp->ll_li;
+	int           ll_n1 = lp->ll_n1;
+
+	while (ll_li != NULL && (lp->ll_empty2 || lp->ll_n2 >= ll_n1))
+	{
+	    li = ll_li->li_next;
+	    if (tv_check_lock(ll_li->li_tv.v_lock, lp->ll_name))
+		return FAIL;
+	    ll_li = li;
+	    ++ll_n1;
+	}
 
 	/* Delete a range of List items. */
 	while (lp->ll_li != NULL && (lp->ll_empty2 || lp->ll_n2 >= lp->ll_n1))