diff --git a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/commands/insert/InsertUtils.java b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/commands/insert/InsertUtils.java
index 92e6f4826b03ca..dbf1b92311ffe8 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/commands/insert/InsertUtils.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/commands/insert/InsertUtils.java
@@ -529,16 +529,16 @@ value, new ExpressionRewriteContext(expressionAnalyzer.getCascadesContext())
         optimizedRowConstructor.add(value);
     }
 
-    private static Expression castValue(Expression value, DataType targetType) {
+    private static Alias castValue(Expression value, DataType targetType) {
         if (value instanceof Alias) {
             Expression oldChild = value.child(0);
             Expression newChild = TypeCoercionUtils.castUnbound(oldChild, targetType);
-            return oldChild == newChild ? value : value.withChildren(newChild);
+            return (Alias) (oldChild == newChild ? value : value.withChildren(newChild));
         } else if (value instanceof UnboundAlias) {
             UnboundAlias unboundAlias = (UnboundAlias) value;
             return new Alias(TypeCoercionUtils.castUnbound(unboundAlias.child(), targetType));
         } else {
-            return TypeCoercionUtils.castUnbound(value, targetType);
+            return new Alias(TypeCoercionUtils.castUnbound(value, targetType));
         }
     }
 
diff --git a/regression-test/suites/insert_p0/insert.groovy b/regression-test/suites/insert_p0/insert.groovy
index 23c32597e64295..fe5d1f11e62754 100644
--- a/regression-test/suites/insert_p0/insert.groovy
+++ b/regression-test/suites/insert_p0/insert.groovy
@@ -149,4 +149,9 @@ suite("insert") {
     def rows1 = sql """select count() from source;"""
     def rows2 = sql """select count() from dest;"""
     assertTrue(rows1 == rows2);
+
+    test {
+        sql("insert into dest values(now(), 0xff, 0xaa)")
+        exception "Unknown column '0xff' in 'table list' in UNBOUND_OLAP_TABLE_SINK clause"
+    }
 }