diff --git a/InnerDetector/InDetRecTools/InDetSecVxFinderTool/InDetSecVxFinderTool/InDetImprovedJetFitterVxFinder.h b/InnerDetector/InDetRecTools/InDetSecVxFinderTool/InDetSecVxFinderTool/InDetImprovedJetFitterVxFinder.h
index ed687a57f512d38b2e7f5cfff37e3b2b9fbce182..6025446d5865da364dc2843526245028394552dd 100755
--- a/InnerDetector/InDetRecTools/InDetSecVxFinderTool/InDetSecVxFinderTool/InDetImprovedJetFitterVxFinder.h
+++ b/InnerDetector/InDetRecTools/InDetSecVxFinderTool/InDetSecVxFinderTool/InDetImprovedJetFitterVxFinder.h
@@ -74,7 +74,7 @@ namespace InDet {
 
     virtual Trk::VxSecVertexInfo* findSecVertex(const xAOD::Vertex & primaryVertex,
 						const TLorentzVector & jetMomentum,
-						const std::vector<const xAOD::IParticle*> & inputTracks) const;
+						const std::vector<const xAOD::IParticle*> & inputTracks) const override;
 
   private:
 
diff --git a/InnerDetector/InDetRecTools/InDetSecVxFinderTool/InDetSecVxFinderTool/InDetJetFitterVxFinder.h b/InnerDetector/InDetRecTools/InDetSecVxFinderTool/InDetSecVxFinderTool/InDetJetFitterVxFinder.h
index 13cd285d3563d02e6a5e86843399cf797ee36837..747166aa128c62a43dcd48c35235c6a3976e1cb8 100755
--- a/InnerDetector/InDetRecTools/InDetSecVxFinderTool/InDetSecVxFinderTool/InDetJetFitterVxFinder.h
+++ b/InnerDetector/InDetRecTools/InDetSecVxFinderTool/InDetSecVxFinderTool/InDetJetFitterVxFinder.h
@@ -62,9 +62,10 @@ namespace InDet {
 
     ~InDetJetFitterVxFinder();
 
+    virtual
     Trk::VxSecVertexInfo* findSecVertex(const xAOD::Vertex & /*primaryVertex*/,
 					const TLorentzVector & /*jetMomentum*/,
-					const std::vector<const xAOD::IParticle*> & /*inputTracks*/ ) const
+					const std::vector<const xAOD::IParticle*> & /*inputTracks*/ ) const override
     {
       /* not implemented */
       return 0;