diff --git a/jpos/src/main/java/org/jpos/security/KeyUsage.java b/jpos/src/main/java/org/jpos/security/KeyUsage.java
index e7f4c8d37b..aa915de193 100644
--- a/jpos/src/main/java/org/jpos/security/KeyUsage.java
+++ b/jpos/src/main/java/org/jpos/security/KeyUsage.java
@@ -32,6 +32,8 @@
  */
 public class KeyUsage implements Serializable {
 
+    private static final long serialVersionUID = -5504819939017756749L;
+
     protected static final Map<String, KeyUsage> TR31MAP =  new LinkedHashMap<>();
 
     /**