diff --git a/test/controller_mock.hpp b/test/controller_mock.hpp
index 9a8e7a6..533b6db 100644
--- a/test/controller_mock.hpp
+++ b/test/controller_mock.hpp
@@ -12,7 +12,7 @@
 class ControllerMock : public PIDController
 {
   public:
-    virtual ~ControllerMock() = default;
+    ~ControllerMock() override = default;
 
     ControllerMock(const std::string& id, ZoneInterface* owner) :
         PIDController(id, owner)