diff --git a/flink-table/flink-table-runtime/src/test/java/org/apache/flink/table/runtime/types/DataTypePrecisionFixerTest.java b/flink-table/flink-table-runtime/src/test/java/org/apache/flink/table/runtime/types/DataTypePrecisionFixerTest.java
index faaf24066bc04..9cc5a10197d96 100644
--- a/flink-table/flink-table-runtime/src/test/java/org/apache/flink/table/runtime/types/DataTypePrecisionFixerTest.java
+++ b/flink-table/flink-table-runtime/src/test/java/org/apache/flink/table/runtime/types/DataTypePrecisionFixerTest.java
@@ -48,9 +48,9 @@
 import static org.assertj.core.api.Assertions.assertThat;
 
 /** Tests for {@link DataTypePrecisionFixer}. */
-public class DataTypePrecisionFixerTest {
+class DataTypePrecisionFixerTest {
 
-    public static List<TestSpec> testData() {
+    private static List<TestSpec> testData() {
         return Arrays.asList(
                 TestSpecs.fix(Types.BIG_DEC)
                         .logicalType(new DecimalType(10, 5))