diff --git a/src/backend/distributed/deparser/ruleutils_18.c b/src/backend/distributed/deparser/ruleutils_18.c
index ee8c997d3..da7becc75 100644
--- a/src/backend/distributed/deparser/ruleutils_18.c
+++ b/src/backend/distributed/deparser/ruleutils_18.c
@@ -6976,7 +6976,7 @@ get_rule_expr(Node *node, deparse_context *context,
 
 						get_rule_expr((Node *) lfirst(lc2), context, showimplicit);
 						appendStringInfo(buf, " AS %s",
-										 ((String *) lfirst_node(String, lc1))->sval);
+										 quote_identifier(lfirst_node(String, lc1)->sval));
 					}
 				}