diff --git a/src/backend/nodes/list.c b/src/backend/nodes/list.c
index b969a52dd6..67f6e6d002 100644
--- a/src/backend/nodes/list.c
+++ b/src/backend/nodes/list.c
@@ -747,7 +747,7 @@ list_member_xid(const List *list, TransactionId datum)
 
 	foreach(cell, list)
 	{
-		if (lfirst_oid(cell) == datum)
+		if (lfirst_xid(cell) == datum)
 			return true;
 	}