diff --git a/src/backend/rewrite/rewriteManip.c b/src/backend/rewrite/rewriteManip.c
index fe89754a73c..610edf10284 100644
--- a/src/backend/rewrite/rewriteManip.c
+++ b/src/backend/rewrite/rewriteManip.c
@@ -744,9 +744,7 @@ ChangeVarNodes(Node *node, int rt_index, int new_index, int sublevels_up)
 bool
 ChangeVarNodesWalkExpression(Node *node, ChangeVarNodes_context *context)
 {
-	return expression_tree_walker(node,
-								  ChangeVarNodes_walker,
-								  (void *) context);
+	return ChangeVarNodes_walker(node, context);
 }
 
 /*