diff --git a/src/main/java/com/alibaba/druid/sql/ast/statement/SQLUpdateStatement.java b/src/main/java/com/alibaba/druid/sql/ast/statement/SQLUpdateStatement.java
index ce6fb1deec..8590529c23 100644
--- a/src/main/java/com/alibaba/druid/sql/ast/statement/SQLUpdateStatement.java
+++ b/src/main/java/com/alibaba/druid/sql/ast/statement/SQLUpdateStatement.java
@@ -64,6 +64,9 @@ public class SQLUpdateStatement extends SQLStatementImpl {
     }
 
     public void setWhere(SQLExpr where) {
+        if (where != null) {
+            where.setParent(this);
+        }
         this.where = where;
     }