Index: src/main/java/org/infinispan/jmx/ComponentsJmxRegistration.java
===================================================================
--- src/main/java/org/infinispan/jmx/ComponentsJmxRegistration.java	(revision 2449)
+++ src/main/java/org/infinispan/jmx/ComponentsJmxRegistration.java	(working copy)
@@ -68,7 +68,7 @@
       this.mBeanServer = mBeanServer;
       this.components = components;
       // Replace any malforming characters out of the group name
-      this.groupName = groupName.replace(':', '_').replace('=','_');
+      this.groupName = ObjectName.quote(groupName);
    }
 
    public void setJmxDomain(String jmxDomain) {