diff --git a/agent/core/src/main/java/org/jolokia/converter/json/simplifier/ObjectNameSimplifier.java b/agent/core/src/main/java/org/jolokia/converter/json/simplifier/ObjectNameSimplifier.java
index <HASH>..<HASH> 100644
--- a/agent/core/src/main/java/org/jolokia/converter/json/simplifier/ObjectNameSimplifier.java
+++ b/agent/core/src/main/java/org/jolokia/converter/json/simplifier/ObjectNameSimplifier.java
@@ -41,7 +41,7 @@ public class ObjectNameSimplifier extends SimplifierExtractor<ObjectName> {
 
     private static class ObjectNameAttributeExtractor implements AttributeExtractor<ObjectName> {
         public Object extract(ObjectName value) throws SkipAttributeException {
-            return value.toString();
+            return value.getCanonicalName();
         }
     }
 }
\ No newline at end of file
return the canonical name of an objectname when simplifying