diff --git a/src/main/java/util/test/StatisticsUtil.java b/src/main/java/util/test/StatisticsUtil.java
index a0f091bc5a66c3788887a94143b1733bd90fa920..f3314529099b77601943b5249c61bf8f0e44a1ef 100644
--- a/src/main/java/util/test/StatisticsUtil.java
+++ b/src/main/java/util/test/StatisticsUtil.java
@@ -32,7 +32,7 @@ import teetime.util.TimestampObject;
  *
  * @since 1.10
  */
-public class StatisticsUtil {
+public final class StatisticsUtil {
 
 	/**
 	 * @since 1.10