diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 4f6b00bd739..88087654de9 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -870,6 +870,9 @@ AddNewAttributeTuples(Oid new_rel_oid,
 	{
 		Form_pg_attribute attr = TupleDescAttr(tupdesc, i);
 
+		if (attr->attisdropped)
+			continue;
+
 		/* Add dependency info */
 		ObjectAddressSubSet(myself, RelationRelationId, new_rel_oid, i + 1);
 		ObjectAddressSet(referenced, TypeRelationId, attr->atttypid);