diff --git a/MuonSpectrometer/MuonGeoModel/MuonGeoModel/Spacer.h b/MuonSpectrometer/MuonGeoModel/MuonGeoModel/Spacer.h
index 0ed326090a4e39961dd940c1db336ceec936ccff..0a0ed6062d681af42638d9ad5e5267c175616200 100755
--- a/MuonSpectrometer/MuonGeoModel/MuonGeoModel/Spacer.h
+++ b/MuonSpectrometer/MuonGeoModel/MuonGeoModel/Spacer.h
@@ -6,7 +6,7 @@
 #define Spacer_H
 
 #include "MuonGeoModel/DetectorElement.h"
-#include "MuonGeoModel/SpacerComponent.h"
+#include "MuonGeoModel/SpaComponent.h"
 
 class GeoVPhysVol;
 
@@ -27,7 +27,7 @@ public:
    void print();
 
 private:
-   SpacerComponent m_component;
+   SpaComponent m_component;
 };
 
 } // namespace MuonGM
diff --git a/MuonSpectrometer/MuonGeoModel/MuonGeoModel/SpacerComponent.h b/MuonSpectrometer/MuonGeoModel/MuonGeoModel/SpacerComponent.h
deleted file mode 100755
index 329227f4e7e1aa7219eda7b49774750a6197a06c..0000000000000000000000000000000000000000
--- a/MuonSpectrometer/MuonGeoModel/MuonGeoModel/SpacerComponent.h
+++ /dev/null
@@ -1,19 +0,0 @@
-/*
-  Copyright (C) 2002-2017 CERN for the benefit of the ATLAS collaboration
-*/
-
-#ifndef SpacerComponent_H
-#define SpacerComponent_H
-
-#include "MuonGeoModel/StandardComponent.h"
-
-namespace MuonGM {
-
-class SpacerComponent: public StandardComponent {
-public:
-    double  maxwdy;  // length from bottom to the max width of the CSL
-    // for CSC it is = dy
-};
-} // namespace MuonGM
-
-#endif
diff --git a/MuonSpectrometer/MuonGeoModel/src/Spacer.cxx b/MuonSpectrometer/MuonGeoModel/src/Spacer.cxx
index 5fd08955a62ebc6752170024f091fe7f7077cb53..2bfd146e9a8b0c7901e16e7e96d06e4856b434b1 100755
--- a/MuonSpectrometer/MuonGeoModel/src/Spacer.cxx
+++ b/MuonSpectrometer/MuonGeoModel/src/Spacer.cxx
@@ -6,7 +6,7 @@
 #include "MuonGeoModel/Station.h"
 #include "MuonGeoModel/MYSQL.h"
 #include "MuonGeoModel/Technology.h"
-#include "MuonGeoModel/SpacerComponent.h"
+#include "MuonGeoModel/SpaComponent.h"
 #include "GeoModelKernel/GeoTrd.h"
 #include "GeoModelKernel/GeoTube.h"
 #include "GeoModelKernel/GeoVPhysVol.h"
@@ -29,7 +29,7 @@ namespace MuonGM {
 
 Spacer::Spacer(Component *ss): DetectorElement(ss->name)
 {
-  SpacerComponent* s = (SpacerComponent*)ss;
+  SpaComponent* s = dynamic_cast<SpaComponent*>(ss);
   width = s->dx1;
   longWidth = s->dx2;
   MYSQL* mysql = MYSQL::GetPointer();