diff --git a/pcep/pcepio/src/main/java/org/onosproject/pcepio/types/PcepNaiUnnumberedAdjacencyIpv4.java b/pcep/pcepio/src/main/java/org/onosproject/pcepio/types/PcepNaiUnnumberedAdjacencyIpv4.java
index 30da0c8..79099b5 100644
--- a/pcep/pcepio/src/main/java/org/onosproject/pcepio/types/PcepNaiUnnumberedAdjacencyIpv4.java
+++ b/pcep/pcepio/src/main/java/org/onosproject/pcepio/types/PcepNaiUnnumberedAdjacencyIpv4.java
@@ -104,10 +104,10 @@
     @Override
     public String toString() {
         return MoreObjects.toStringHelper(getClass())
-                .add("local Node Id", localNodeId)
-                .add("local Interface Id", localInterfaceId)
-                .add("remote Node Id", remoteNodeId)
-                .add("remote Interface Id:", remoteInterfaceId)
+                .add("localNodeId", localNodeId)
+                .add("localInterfaceId", localInterfaceId)
+                .add("remoteNodeId", remoteNodeId)
+                .add("remoteInterfaceId:", remoteInterfaceId)
                 .toString();
     }
 }