diff --git a/fe/fe-core/src/main/antlr4/org/apache/doris/nereids/DorisParser.g4 b/fe/fe-core/src/main/antlr4/org/apache/doris/nereids/DorisParser.g4
index 0fbb0a1f96..9f911d71fe 100644
--- a/fe/fe-core/src/main/antlr4/org/apache/doris/nereids/DorisParser.g4
+++ b/fe/fe-core/src/main/antlr4/org/apache/doris/nereids/DorisParser.g4
@@ -69,7 +69,7 @@ statementBase
     | explain? cte? UPDATE tableName=multipartIdentifier tableAlias
         SET updateAssignmentSeq
         fromClause?
-        whereClause                                                    #update
+        whereClause?                                                   #update
     | explain? cte? DELETE FROM tableName=multipartIdentifier
         partitionSpec? tableAlias
         (USING relations)?
diff --git a/fe/fe-core/src/main/java/org/apache/doris/nereids/parser/LogicalPlanBuilder.java b/fe/fe-core/src/main/java/org/apache/doris/nereids/parser/LogicalPlanBuilder.java
index 5492e7de5b..247df0e2d6 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/nereids/parser/LogicalPlanBuilder.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/nereids/parser/LogicalPlanBuilder.java
@@ -828,7 +828,7 @@ public class LogicalPlanBuilder extends DorisParserBaseVisitor<Object> {
         if (ctx.fromClause() != null) {
             query = withRelations(query, ctx.fromClause().relations().relation());
         }
-        query = withFilter(query, Optional.of(ctx.whereClause()));
+        query = withFilter(query, Optional.ofNullable(ctx.whereClause()));
         String tableAlias = null;
         if (ctx.tableAlias().strictIdentifier() != null) {
             tableAlias = ctx.tableAlias().getText();