diff --git a/libsrc/stlgeom/stltopology.hpp b/libsrc/stlgeom/stltopology.hpp
index 2a3822f70..a14dc5bda 100644
--- a/libsrc/stlgeom/stltopology.hpp
+++ b/libsrc/stlgeom/stltopology.hpp
@@ -350,7 +350,7 @@ public:
   int GetNP() const { return points.Size(); }
   int AddPoint(const Point<3> & p) { points.Append(p); return points.Size(); }
   const Point<3> & GetPoint(STLPointId nr) const { return points[nr]; } // .Get(nr); }
+  DLL_HEADER int GetPointNum (const Point<3> & p);
-  int GetPointNum (const Point<3> & p);
   void SetPoint(STLPointId nr, const Point<3> & p) { points[nr] = p; } // { points.Elem(nr) = p; }
   auto & GetPoints() const { return points; }
 
diff --git a/nglib/nglib.cpp b/nglib/nglib.cpp
index ee25f3814..c8fe35cb2 100644
--- a/nglib/nglib.cpp
+++ b/nglib/nglib.cpp
@@ -619,6 +619,7 @@ namespace nglib
          }
          */
          geo->AddEdges(readedges);
+         readedges.SetSize(0);
       }
 
       if (geo->GetStatus() == STLTopology::STL_GOOD || geo->GetStatus() == STLTopology::STL_WARNING) return NG_OK;