diff --git a/api/src/main/java/org/cache2k/EntryRefreshController.java b/api/src/main/java/org/cache2k/EntryRefreshController.java
index <HASH>..<HASH> 100644
--- a/api/src/main/java/org/cache2k/EntryRefreshController.java
+++ b/api/src/main/java/org/cache2k/EntryRefreshController.java
@@ -27,7 +27,7 @@ package org.cache2k;
  *
  * @deprecated
  */
-public class EntryRefreshController<T> {
+public class EntryRefreshController<T> implements RefreshController<T> {
 
   public static final EntryRefreshController INSTANCE = new EntryRefreshController();
fix for API compatibility to <I>