diff --git a/Geometry/HGCalCommonData/plugins/dd4hep/DDHGCalPassive.cc b/Geometry/HGCalCommonData/plugins/dd4hep/DDHGCalPassive.cc
index e3193a0e1fe..794efbb6cfb 100644
--- a/Geometry/HGCalCommonData/plugins/dd4hep/DDHGCalPassive.cc
+++ b/Geometry/HGCalCommonData/plugins/dd4hep/DDHGCalPassive.cc
@@ -118,7 +118,7 @@ struct HGCalPassive {
           ns.addSolidNS(ns.prepend(parentname), solid);
           dd4hep::Material matter = ns.material(moduleMaterial);
           dd4hep::Volume glogM = dd4hep::Volume(solid.name(), solid, matter);
-	  ns.addVolumeNS(glogM);
+          ns.addVolumeNS(glogM);
 #ifdef EDM_ML_DEBUG
           edm::LogVerbatim("HGCalGeom") << "DDHGCalPassive: " << solid.name() << " extruded polygon made of "
                                         << matter.name() << " z|x|y|s (0) " << zw[0] << ":" << zx[0] << ":" << zy[0]
@@ -141,7 +141,7 @@ struct HGCalPassive {
               ns.addSolidNS(ns.prepend(layerName), solid);
               matter = ns.material(layerMaterials[i]);
               glogs[i] = dd4hep::Volume(solid.name(), solid, matter);
-	      ns.addVolumeNS(glogs[i]);
+              ns.addVolumeNS(glogs[i]);
 #ifdef EDM_ML_DEBUG
               edm::LogVerbatim("HGCalGeom")
                   << "DDHGCalPassive: Layer " << i << ":" << l << ":" << solid.name() << " extruded polygon made of "