diff --git a/DDG4/src/Geant4ShapeConverter.cpp b/DDG4/src/Geant4ShapeConverter.cpp
index 9a957510a0c525eff99266a510459c5ec801c8e9..e79d2edb8930ec3b1db3b21f4173cc85b4962464 100644
--- a/DDG4/src/Geant4ShapeConverter.cpp
+++ b/DDG4/src/Geant4ShapeConverter.cpp
@@ -136,9 +136,7 @@ namespace dd4hep {
       z.reserve(nz);
       polygon.reserve(nz);
       for(size_t i=0; i<nz; ++i)   {
-        z.emplace_back(sh->GetZ(i) * CM_2_MM,
-                                                 {sh->GetXOffset(i), sh->GetYOffset(i)},
-                                                 sh->GetScale(i));
+        z.emplace_back(G4ExtrudedSolid::ZSection(sh->GetZ(i) * CM_2_MM, {sh->GetXOffset(i), sh->GetYOffset(i)}, sh->GetScale(i)));
         polygon.emplace_back(sh->GetX(i) * CM_2_MM,sh->GetY(i) * CM_2_MM);
       }
       return new G4ExtrudedSolid(sh->GetName(), polygon, z);