diff --git a/activemq-jaas/src/main/java/org/apache/activemq/jaas/PropertiesLoader.java b/activemq-jaas/src/main/java/org/apache/activemq/jaas/PropertiesLoader.java
index 56d205d180..3f2df611b5 100644
--- a/activemq-jaas/src/main/java/org/apache/activemq/jaas/PropertiesLoader.java
+++ b/activemq-jaas/src/main/java/org/apache/activemq/jaas/PropertiesLoader.java
@@ -24,7 +24,7 @@ import org.slf4j.LoggerFactory;
 
 public class PropertiesLoader {
     private static final Logger LOG = LoggerFactory.getLogger(PropertiesLoader.class);
-    static Map<FileNameKey, ReloadableProperties> staticCache = new HashMap<FileNameKey, ReloadableProperties>();
+    static final Map<FileNameKey, ReloadableProperties> staticCache = new HashMap<FileNameKey, ReloadableProperties>();
     protected boolean debug;
 
     public void init(Map options) {