diff --git a/apps/mappingmanagement/api/src/main/java/org/onosproject/mapping/codec/MappingAddressCodec.java b/apps/mappingmanagement/api/src/main/java/org/onosproject/mapping/codec/MappingAddressCodec.java
index fe404b4..f04890f 100644
--- a/apps/mappingmanagement/api/src/main/java/org/onosproject/mapping/codec/MappingAddressCodec.java
+++ b/apps/mappingmanagement/api/src/main/java/org/onosproject/mapping/codec/MappingAddressCodec.java
@@ -27,15 +27,15 @@
  */
 public final class MappingAddressCodec extends JsonCodec<MappingAddress> {
 
-    protected static final Logger log =
+    private static final Logger log =
                             LoggerFactory.getLogger(MappingAddressCodec.class);
 
-    protected static final String TYPE = "type";
-    protected static final String IPV4 = "ipv4";
-    protected static final String IPV6 = "ipv6";
-    protected static final String MAC = "mac";
-    protected static final String DN = "dn";
-    protected static final String AS = "as";
+    static final String TYPE = "type";
+    static final String IPV4 = "ipv4";
+    static final String IPV6 = "ipv6";
+    static final String MAC = "mac";
+    static final String DN = "dn";
+    static final String AS = "as";
 
     @Override
     public ObjectNode encode(MappingAddress address, CodecContext context) {