diff --git a/src/test/java/net/onrc/onos/core/devicemanager/OnosDeviceManagerTest.java b/src/test/java/net/onrc/onos/core/devicemanager/OnosDeviceManagerTest.java
index dd104e2..fc0a008 100644
--- a/src/test/java/net/onrc/onos/core/devicemanager/OnosDeviceManagerTest.java
+++ b/src/test/java/net/onrc/onos/core/devicemanager/OnosDeviceManagerTest.java
@@ -64,6 +64,7 @@
 
     @Override
     @Before
+    @SuppressWarnings("unchecked")
     public void setUp() throws Exception {
         super.setUp();
         MockTopology topology = new MockTopology();