diff --git a/core/api/src/main/java/org/onlab/onos/net/host/HostService.java b/core/api/src/main/java/org/onlab/onos/net/host/HostService.java
index a42e231..39f63c0 100644
--- a/core/api/src/main/java/org/onlab/onos/net/host/HostService.java
+++ b/core/api/src/main/java/org/onlab/onos/net/host/HostService.java
@@ -4,7 +4,7 @@
 import org.onlab.onos.net.DeviceId;
 import org.onlab.onos.net.Host;
 import org.onlab.onos.net.HostId;
-import org.onlab.packet.IpAddress;
+import org.onlab.packet.IpPrefix;
 import org.onlab.packet.MacAddress;
 import org.onlab.packet.VlanId;
 
@@ -59,7 +59,7 @@
      * @param ip ip address
      * @return set of hosts with the given IP
      */
-    Set<Host> getHostsByIp(IpAddress ip);
+    Set<Host> getHostsByIp(IpPrefix ip);
 
     // TODO: consider adding Host getHostByIp(IpAddress ip, VlanId vlan);