diff --git a/paimon-core/src/test/java/org/apache/paimon/codegen/CodeGenUtilsTest.java b/paimon-core/src/test/java/org/apache/paimon/codegen/CodeGenUtilsTest.java
index b14df02a6c43..207aa4b7b1a6 100644
--- a/paimon-core/src/test/java/org/apache/paimon/codegen/CodeGenUtilsTest.java
+++ b/paimon-core/src/test/java/org/apache/paimon/codegen/CodeGenUtilsTest.java
@@ -35,7 +35,7 @@
 import static org.apache.paimon.codegen.CodeGenUtils.ClassKey;
 import static org.assertj.core.api.Assertions.assertThat;
 
-public class CodeGenUtilsTest {
+class CodeGenUtilsTest {
 
     @BeforeAll
     public static void before() {