diff --git a/services/src/main/java/org/keycloak/truststore/SSLSocketFactory.java b/services/src/main/java/org/keycloak/truststore/SSLSocketFactory.java
index 90267bfaea..e8003244c3 100755
--- a/services/src/main/java/org/keycloak/truststore/SSLSocketFactory.java
+++ b/services/src/main/java/org/keycloak/truststore/SSLSocketFactory.java
@@ -22,6 +22,7 @@ import org.jboss.logging.Logger;
 import java.io.IOException;
 import java.net.InetAddress;
 import java.net.Socket;
+import java.util.Comparator;
 
 
 /**
@@ -36,7 +37,7 @@ import java.net.Socket;
  * @author <a href="mailto:mstrukel@redhat.com">Marko Strukelj</a>
  */
 
-public class SSLSocketFactory extends javax.net.ssl.SSLSocketFactory {
+public class SSLSocketFactory extends javax.net.ssl.SSLSocketFactory implements Comparator {
 
     private static final Logger log = Logger.getLogger(SSLSocketFactory.class);
 
@@ -107,4 +108,8 @@ public class SSLSocketFactory extends javax.net.ssl.SSLSocketFactory {
         return sslsf.createSocket();
     }
 
+    @Override
+    public int compare(Object socketFactory1, Object socketFactory2) {
+        return socketFactory1.equals(socketFactory2) ? 0 : -1;
+    }
 }