diff --git a/Trigger/TrigT1/L1Topo/L1TopoSimulation/src/AthenaL1TopoHistSvc.h b/Trigger/TrigT1/L1Topo/L1TopoSimulation/src/AthenaL1TopoHistSvc.h
index 16ea9a9e80edd91177fca9dc8201695f7f8e9000..fcae989360d090d8da8fc443314d440f9afc31a6 100644
--- a/Trigger/TrigT1/L1Topo/L1TopoSimulation/src/AthenaL1TopoHistSvc.h
+++ b/Trigger/TrigT1/L1Topo/L1TopoSimulation/src/AthenaL1TopoHistSvc.h
@@ -20,9 +20,9 @@ public:
 
    virtual TH1 * findHist(const std::string & histName) override;
 
-   virtual void setBaseDir(const std::string & baseDir);
+   virtual void setBaseDir(const std::string & baseDir) override;
 
-   virtual void save();
+   virtual void save() override;
 
 private:
 
diff --git a/Trigger/TrigT1/L1Topo/L1TopoSimulation/src/L1TopoSimulation.h b/Trigger/TrigT1/L1Topo/L1TopoSimulation/src/L1TopoSimulation.h
index a2aec627fd2bf5d7d41fc47fbe3d811022cf28d3..5c9283edacf465b26b33115ab4740a409b93d895 100644
--- a/Trigger/TrigT1/L1Topo/L1TopoSimulation/src/L1TopoSimulation.h
+++ b/Trigger/TrigT1/L1Topo/L1TopoSimulation/src/L1TopoSimulation.h
@@ -96,8 +96,6 @@ namespace LVL1 {
 
       std::unique_ptr<TCS::TopoSteering>  m_topoSteering; //!< the topo steering 
 
-      TH1 *  m_DecisionHist[3] { nullptr, nullptr, nullptr };
-
       BooleanProperty m_fillHistogramsBasedOnHardwareDecision { false }; // default: fill based on simulation
       UnsignedIntegerProperty m_prescaleForDAQROBAccess {4}; ///< read hdw bits every N events (used only when m_fillHistogramsBasedOnHardwareDecision is true)
       UnsignedIntegerProperty m_prescale; //! property for prescale factor
diff --git a/Trigger/TrigT1/L1Topo/L1TopoSimulation/src/MuonInputProvider.h b/Trigger/TrigT1/L1Topo/L1TopoSimulation/src/MuonInputProvider.h
index 511af9672cc83b8cf51aa354c91c8c1c928cd20a..62c48e966af273ceb2990933482e09f27ff721c8 100644
--- a/Trigger/TrigT1/L1Topo/L1TopoSimulation/src/MuonInputProvider.h
+++ b/Trigger/TrigT1/L1Topo/L1TopoSimulation/src/MuonInputProvider.h
@@ -47,9 +47,9 @@ namespace LVL1 {
 
       virtual StatusCode initialize() override;
 
-      virtual StatusCode fillTopoInputEvent(TCS::TopoInputEvent& ) const; 
+      virtual StatusCode fillTopoInputEvent(TCS::TopoInputEvent& ) const override;
 
-      virtual void handle(const Incident&);
+      virtual void handle(const Incident&) override;
 
    private: