diff --git a/mock_p2p_manager.h b/mock_p2p_manager.h
index a0ed920..6b5a75e 100644
--- a/mock_p2p_manager.h
+++ b/mock_p2p_manager.h
@@ -60,7 +60,7 @@
             &FakeP2PManager::CountSharedFiles));
   }
 
-  virtual ~MockP2PManager() {}
+  ~MockP2PManager() override {}
 
   // P2PManager overrides.
   MOCK_METHOD1(SetDevicePolicy, void(const policy::DevicePolicy*));