diff --git a/onos-app-dhcpserver/src/main/java/org/onosproject/dhcpserver/DHCPStore.java b/onos-app-dhcpserver/src/main/java/org/onosproject/dhcpserver/DHCPStore.java
index e2cabbd..0ecd1cb 100644
--- a/onos-app-dhcpserver/src/main/java/org/onosproject/dhcpserver/DHCPStore.java
+++ b/onos-app-dhcpserver/src/main/java/org/onosproject/dhcpserver/DHCPStore.java
@@ -77,7 +77,7 @@
      *
      * @return the collection of the mappings
      */
-    Map<MacAddress, Ip4Address> listMapping();
+    Map<MacAddress, IPAssignment> listMapping();
 
     /**
      * Assigns the requested IP to the MAC ID (if available) for an indefinite period of time.