diff --git a/Trigger/TrigFTK/FTK_RecTools/FTK_RecTools/FTK_PixelClusterOnTrackTool.h b/Trigger/TrigFTK/FTK_RecTools/FTK_RecTools/FTK_PixelClusterOnTrackTool.h
index 1d20fb45b9f4088f6b9ca8814b3dcd42d6b66bba..8e00b5b73458164775afc5c783f82095a9991232 100644
--- a/Trigger/TrigFTK/FTK_RecTools/FTK_RecTools/FTK_PixelClusterOnTrackTool.h
+++ b/Trigger/TrigFTK/FTK_RecTools/FTK_RecTools/FTK_PixelClusterOnTrackTool.h
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 2002-2018 CERN for the benefit of the ATLAS collaboration
+  Copyright (C) 2002-2019 CERN for the benefit of the ATLAS collaboration
 */
 
 ///////////////////////////////////////////////////////////////////
@@ -89,7 +89,7 @@ public:
       of the intersecting track.
   */
   virtual const InDet::PixelClusterOnTrack* correct(const Trk::PrepRawData&,
-                                                    const Trk::TrackParameters&) const;
+                                                    const Trk::TrackParameters&) const override;
 
   virtual const InDet::PixelClusterOnTrack* correctDefault(const Trk::PrepRawData&, 
                                                            const Trk::TrackParameters&) const;
diff --git a/Trigger/TrigFTK/FTK_RecTools/src/FTK_HashIDTool.cxx b/Trigger/TrigFTK/FTK_RecTools/src/FTK_HashIDTool.cxx
index c8aaec5bbf2e237baad088bb071455c03d0b42b4..584f6959c27d70558c45a98235df7b07c46509b4 100644
--- a/Trigger/TrigFTK/FTK_RecTools/src/FTK_HashIDTool.cxx
+++ b/Trigger/TrigFTK/FTK_RecTools/src/FTK_HashIDTool.cxx
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 2018 CERN for the benefit of the ATLAS collaboration
+  Copyright (C) 2018, 2019 CERN for the benefit of the ATLAS collaboration
 */
 #include <vector>
 #include <string>
@@ -30,9 +30,6 @@ using namespace std;
 using Amg::Vector3D;
 
 namespace {
-  inline double square(const double x){
-    return x*x;
-  }
   const double ONE_TWELFTH = 1./12.;
 }
 
diff --git a/Trigger/TrigFTK/FTK_RecTools/src/FTK_PixelClusterOnTrackTool.cxx b/Trigger/TrigFTK/FTK_RecTools/src/FTK_PixelClusterOnTrackTool.cxx
index cfe0500eb3c8f46e5dbb2a893c78574ba0dee90f..36a44e54fc02f7fc7509fcd4f1dcfad4c9e01a30 100644
--- a/Trigger/TrigFTK/FTK_RecTools/src/FTK_PixelClusterOnTrackTool.cxx
+++ b/Trigger/TrigFTK/FTK_RecTools/src/FTK_PixelClusterOnTrackTool.cxx
@@ -852,7 +852,7 @@ FTK_PixelClusterOnTrackTool::getErrorsTIDE_Ambi(const InDet::PixelCluster *pixel
 
   bool correctdR = false;
   
-  std::array<float, 3> correctiondR = {0., 0., 0.};
+  std::array<float, 3> correctiondR = {{0., 0., 0.}};
   
   if(m_applydRcorrection){
     SG::ReadHandle<InDet::DRMap> mapHandle(m_dRMap);