diff --git a/MuonSpectrometer/MuonIdHelpers/MuonIdHelpers/MdtIdHelper.h b/MuonSpectrometer/MuonIdHelpers/MuonIdHelpers/MdtIdHelper.h
index 1a5ff959128257e83bbaa9286a13ac1ae94e5f77..80d90c2860d40b3e8edfd2a8b4e1dfd6f0fbc336 100644
--- a/MuonSpectrometer/MuonIdHelpers/MuonIdHelpers/MdtIdHelper.h
+++ b/MuonSpectrometer/MuonIdHelpers/MuonIdHelpers/MdtIdHelper.h
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 2002-2017 CERN for the benefit of the ATLAS collaboration
+  Copyright (C) 2002-2019 CERN for the benefit of the ATLAS collaboration
 */
 
 // ******************************************************************************
@@ -144,8 +144,10 @@ class MdtIdHelper : public MuonIdHelper
   int gasGap(const Identifier& id) const; 
   /// always false for MDTs 
   bool measuresPhi(const Identifier& id) const; 
-  /// is this and sMDT chamber
+  /// is this an sMDT chamber
   bool isSmallMdt(const Identifier& id) const;
+  /// is this a BMG chamber
+  bool isBMG(const Identifier& id) const;
 
  private:
 
@@ -348,6 +350,13 @@ inline bool MdtIdHelper::isSmallMdt(const Identifier& id) const
   else return false;
 }
 
+inline bool MdtIdHelper::isBMG(const Identifier& id) const
+{
+  int index=stationName(id);
+  if(stationNameIndex("BMG")==index) return true;
+  else return false;
+}
+
 inline int MdtIdHelper::channel(const Identifier& id) const
 {