diff --git a/daemon/fw/access-strategy.hpp b/daemon/fw/access-strategy.hpp
index d6688fc..0f83a64 100644
--- a/daemon/fw/access-strategy.hpp
+++ b/daemon/fw/access-strategy.hpp
@@ -68,7 +68,7 @@
 
   /** \brief StrategyInfo on PIT entry
    */
-  class PitInfo : public StrategyInfo
+  class PitInfo final : public StrategyInfo
   {
   public:
     static constexpr int
@@ -83,7 +83,7 @@
 
   /** \brief StrategyInfo in measurements table
    */
-  class MtInfo : public StrategyInfo
+  class MtInfo final : public StrategyInfo
   {
   public:
     static constexpr int