diff --git a/test/readinterface_mock.hpp b/test/readinterface_mock.hpp
index 0b77c8a..3634518 100644
--- a/test/readinterface_mock.hpp
+++ b/test/readinterface_mock.hpp
@@ -10,7 +10,7 @@
 class ReadInterfaceMock : public ReadInterface
 {
   public:
-    virtual ~ReadInterfaceMock() = default;
+    ~ReadInterfaceMock() override = default;
 
     MOCK_METHOD0(read, ReadReturn());
 };