diff --git a/src/main/java/org/apache/commons/lang3/time/DateUtils.java b/src/main/java/org/apache/commons/lang3/time/DateUtils.java
index ebf4048cd..19b6aebb4 100644
--- a/src/main/java/org/apache/commons/lang3/time/DateUtils.java
+++ b/src/main/java/org/apache/commons/lang3/time/DateUtils.java
@@ -119,7 +119,7 @@ public class DateUtils {
     /**
      * Calendar modification types.
      */
-    private static enum ModifyType {
+    private enum ModifyType {
         /**
          * Truncation.
          */