diff --git a/src/ref_DiskTracker_geo.cpp b/src/ref_DiskTracker_geo.cpp
index eb2faec7449674d3309b116ec5f877d13aa39e86..51b13b935404b452866dd3ade2921d6add9f7429 100644
--- a/src/ref_DiskTracker_geo.cpp
+++ b/src/ref_DiskTracker_geo.cpp
@@ -64,17 +64,18 @@ static Ref_t create_detector(Detector& description, xml_h e, SensitiveDetector s
     }
 
     if ( !reflect )  {
-    DetElement layer(sdet,l_nam+"_pos",l_num);
-    pv = assembly.placeVolume(l_vol,Position(0,0,zmin+layerWidth/2.));
-    pv.addPhysVolID("layer",l_num);
-    pv.addPhysVolID("barrel",1);
-    layer.setPlacement(pv);
+      DetElement layer(sdet, l_nam + "_pos", l_num);
+      pv = assembly.placeVolume(l_vol, Position(0, 0, zmin + layerWidth / 2.));
+      pv.addPhysVolID("layer", l_num);
+      pv.addPhysVolID("barrel", 1);
+      layer.setPlacement(pv);
     } else {
+      DetElement layer(sdet, l_nam + "_neg", l_num);
       pv = assembly.placeVolume(l_vol,Transform3D(RotationY(M_PI),Position(0,0,-zmin-layerWidth/2)));
       pv.addPhysVolID("layer",l_num);
       pv.addPhysVolID("barrel",2);
-      DetElement layerR = layer.clone(l_nam+"_neg");
-      sdet.add(layerR.setPlacement(pv));
+      //DetElement layerR = layer.clone(l_nam+"_neg");
+      sdet.add(layer.setPlacement(pv));
     }
   }
   if ( x_det.hasAttr(_U(combineHits)) ) {