diff --git a/test/zone_mock.hpp b/test/zone_mock.hpp
index 7d08f63..dcf6b2a 100644
--- a/test/zone_mock.hpp
+++ b/test/zone_mock.hpp
@@ -13,7 +13,7 @@
 class ZoneMock : public ZoneInterface
 {
   public:
-    virtual ~ZoneMock() = default;
+    ~ZoneMock() override = default;
 
     MOCK_METHOD0(updateFanTelemetry, void());
     MOCK_METHOD0(updateSensors, void());
@@ -21,7 +21,7 @@
     MOCK_METHOD1(getCachedValue, double(const std::string&));
 
     // Compatibility interface for getCachedValues
-    ValueCacheEntry getCachedValues(const std::string& s)
+    ValueCacheEntry getCachedValues(const std::string& s) override
     {
         auto v = getCachedValue(s);
         return {v, v};