diff --git a/core/net/src/test/java/org/onosproject/net/flow/impl/FlowRuleManagerTest.java b/core/net/src/test/java/org/onosproject/net/flow/impl/FlowRuleManagerTest.java
index db434c7..afd9a90 100644
--- a/core/net/src/test/java/org/onosproject/net/flow/impl/FlowRuleManagerTest.java
+++ b/core/net/src/test/java/org/onosproject/net/flow/impl/FlowRuleManagerTest.java
@@ -80,6 +80,7 @@
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertTrue;
+import static org.onosproject.net.NetTestTools.injectEventDispatcher;
 import static org.onosproject.net.flow.FlowRuleEvent.Type.RULE_ADDED;
 import static org.onosproject.net.flow.FlowRuleEvent.Type.RULE_ADD_REQUESTED;
 import static org.onosproject.net.flow.FlowRuleEvent.Type.RULE_REMOVED;
@@ -112,7 +113,7 @@
     public void setUp() {
         mgr = new FlowRuleManager();
         mgr.store = new SimpleFlowRuleStore();
-        mgr.eventDispatcher = new TestEventDispatcher();
+        injectEventDispatcher(mgr, new TestEventDispatcher());
         mgr.deviceService = new TestDeviceService();
         mgr.coreService = new TestCoreService();
         mgr.operationsService = MoreExecutors.newDirectExecutorService();
@@ -137,7 +138,7 @@
                     registry.getProviders().contains(provider.id()));
         service.removeListener(listener);
         mgr.deactivate();
-        mgr.eventDispatcher = null;
+        injectEventDispatcher(mgr, null);
         mgr.deviceService = null;
     }