diff --git a/reco/detectors/tof/CbmTofCalibrator.h b/reco/detectors/tof/CbmTofCalibrator.h
index 08e913e57a49593aba097b74ddbe957d1c100295..ce596f2982bc0feeede7cdd586b98dc4bea39022 100644
--- a/reco/detectors/tof/CbmTofCalibrator.h
+++ b/reco/detectors/tof/CbmTofCalibrator.h
@@ -71,6 +71,9 @@ private:
   CbmTofDigiBdfPar* fDigiBdfPar;
   TClonesArray* fTofDigiMatchColl;  // TOF Digi Links
   TH1* fhCalR0;
+  TH1* fhCalDX0;
+  TH1* fhCalDY0;
+
   std::vector<TH2*> fhCalPos;   // [nbDet]
   std::vector<TH2*> fhCalTOff;  // [nbDet]
   std::vector<TH2*> fhCalTot;   // [nbDet]