diff --git a/src/main/java/com/alibaba/druid/sql/dialect/postgresql/ast/stmt/PGSelectQueryBlock.java b/src/main/java/com/alibaba/druid/sql/dialect/postgresql/ast/stmt/PGSelectQueryBlock.java
index 4f935cd44b..2ec1e88dbe 100644
--- a/src/main/java/com/alibaba/druid/sql/dialect/postgresql/ast/stmt/PGSelectQueryBlock.java
+++ b/src/main/java/com/alibaba/druid/sql/dialect/postgresql/ast/stmt/PGSelectQueryBlock.java
@@ -109,6 +109,9 @@ public class PGSelectQueryBlock extends SQLSelectQueryBlock implements PGSQLObje
     }
 
     public void setOrderBy(SQLOrderBy orderBy) {
+        if (orderBy.getParent() == null) {
+            orderBy.setParent(this);
+        }
         this.orderBy = orderBy;
     }