diff --git a/DDCAD/include/DDCAD/Utilities.h b/DDCAD/include/DDCAD/Utilities.h
index a7e8f511d..dcd5b21f6 100644
--- a/DDCAD/include/DDCAD/Utilities.h
+++ b/DDCAD/include/DDCAD/Utilities.h
@@ -26,24 +26,30 @@ namespace dd4hep {
   /// Namespace for implementation details of the AIDA detector description toolkit
   namespace cad  {
 
+#if ROOT_VERSION_CODE >= ROOT_VERSION(6,31,1)
     inline std::string streamFacet(TGeoFacet const& facet,
-					 TGeoTessellated const& shape) {
+                                   TGeoTessellated const& shape) {
       using ::operator<<;
       std::stringstream str;
-#if ROOT_VERSION_CODE >= ROOT_VERSION(6,31,1)
       str << "{";
       for (int i = 0; i < facet.GetNvert(); ++i) {
-	str << shape.GetVertex(facet[i]);
-	if (i != facet.GetNvert() - 1)
-	  str << ", ";
+        str << shape.GetVertex(facet[i]);
+        if (i != facet.GetNvert() - 1)
+          str << ", ";
       }
       str << "}";
+      return str.str();
+    }
 #else
+    inline std::string streamFacet(TGeoFacet const& facet,
+                                   TGeoTessellated const& /* shape */) {
+      using ::operator<<;
+      std::stringstream str;
       str << facet;
-#endif
       return str.str();
     }
-
+#endif
+    
     inline std::string streamVertices(ROOT::Geom::Vertex_t const& v1,
 					    ROOT::Geom::Vertex_t const& v2,
 					    ROOT::Geom::Vertex_t const& v3) {
diff --git a/DDCAD/src/ASSIMPReader.cpp b/DDCAD/src/ASSIMPReader.cpp
index 03b9166f5..07fa11651 100644
--- a/DDCAD/src/ASSIMPReader.cpp
+++ b/DDCAD/src/ASSIMPReader.cpp
@@ -127,12 +127,21 @@ ASSIMPReader::readVolumes(const std::string& source, double unit_length)  const
           printout(DEBUG, "ASSIMPReader", "+++ %s: Drop degenerated facet: %d %d %d",
                    name.c_str(), idx[0], idx[1], idx[2]);
         }
+#if ROOT_VERSION_CODE >= ROOT_VERSION(6,31,1)
         else if ( mesh->mFaces[i].mNumIndices == 3 )   {
           shape->AddFacet(vertices[idx[0]], vertices[idx[1]], vertices[idx[2]]);
         }
         else if ( mesh->mFaces[i].mNumIndices == 4 )   {
           shape->AddFacet(vertices[idx[0]], vertices[idx[1]], vertices[idx[2]], vertices[idx[3]]);
         }
+#else
+        else if ( mesh->mFaces[i].mNumIndices == 3 )   {
+          shape->AddFacet(idx[0], idx[1], idx[2]);
+        }
+        else if ( mesh->mFaces[i].mNumIndices == 4 )   {
+          shape->AddFacet(idx[0], idx[1], idx[2], idx[3]);
+        }
+#endif
         else  {
           printout(INFO, "ASSIMPReader", "+++ %s: Fancy facet with %d indices.",
                    name.c_str(), mesh->mFaces[i].mNumIndices);