diff --git a/providers/openflow/group/src/test/java/org/onosproject/provider/of/group/impl/OpenFlowGroupProviderTest.java b/providers/openflow/group/src/test/java/org/onosproject/provider/of/group/impl/OpenFlowGroupProviderTest.java
index 9b87b22..6abd885 100644
--- a/providers/openflow/group/src/test/java/org/onosproject/provider/of/group/impl/OpenFlowGroupProviderTest.java
+++ b/providers/openflow/group/src/test/java/org/onosproject/provider/of/group/impl/OpenFlowGroupProviderTest.java
@@ -40,6 +40,7 @@
 import org.onosproject.net.provider.AbstractProviderService;
 import org.onosproject.net.provider.ProviderId;
 import org.onosproject.openflow.controller.Dpid;
+import org.onosproject.openflow.controller.OpenFlowClassifierListener;
 import org.onosproject.openflow.controller.OpenFlowController;
 import org.onosproject.openflow.controller.OpenFlowEventListener;
 import org.onosproject.openflow.controller.OpenFlowMessageListener;
@@ -177,7 +178,6 @@
     }
 
 
-
     @After
     public void tearDown() {
         provider.deactivate();
@@ -313,6 +313,14 @@
         public OpenFlowSwitch getEqualSwitch(Dpid dpid) {
             return null;
         }
+
+        @Override
+        public void removeClassifierListener(OpenFlowClassifierListener listener) {
+        }
+
+        @Override
+        public void addClassifierListener(OpenFlowClassifierListener listener) {
+        }
     }
 
     private class TestGroupProviderRegistry implements GroupProviderRegistry {