diff --git a/apps/vtnrsc/src/main/java/org/onosproject/vtnrsc/VirtualPort.java b/apps/vtnrsc/src/main/java/org/onosproject/vtnrsc/VirtualPort.java
index 7886224..d2d7c14 100644
--- a/apps/vtnrsc/src/main/java/org/onosproject/vtnrsc/VirtualPort.java
+++ b/apps/vtnrsc/src/main/java/org/onosproject/vtnrsc/VirtualPort.java
@@ -28,7 +28,7 @@
     /**
      * Coarse classification of the type of the virtual port.
      */
-    public enum State {
+    enum State {
         /**
          * Signifies that a virtualPort is currently active,This state mean that
          * this virtualPort is available.
@@ -37,7 +37,7 @@
         /**
          * Signifies that a virtualPort is currently unavailable.
          */
-        DOWN
+        DOWN;
     }
 
     /**