diff --git a/src/main/java/net/onrc/onos/ofcontroller/flowmanager/FlowManager.java b/src/main/java/net/onrc/onos/ofcontroller/flowmanager/FlowManager.java
index fd65520..bd498cc 100644
--- a/src/main/java/net/onrc/onos/ofcontroller/flowmanager/FlowManager.java
+++ b/src/main/java/net/onrc/onos/ofcontroller/flowmanager/FlowManager.java
@@ -404,8 +404,9 @@
 	    case FE_USER_DELETE:
 		datagridService.notificationSendFlowEntryRemoved(flowEntry.flowEntryId());
 		break;
-		default:
-			break;
+	    case FE_USER_UNKNOWN:
+		assert(false);
+		break;
 	    }
 	}
     }