diff --git a/libsrc/meshing/debugging.cpp b/libsrc/meshing/debugging.cpp
index c5dbd906..43b837fd 100644
--- a/libsrc/meshing/debugging.cpp
+++ b/libsrc/meshing/debugging.cpp
@@ -2,7 +2,7 @@
 
 namespace netgen
 {
-    unique_ptr<Mesh> GetOpenElements( const Mesh & m, int dom = 0 )
+    unique_ptr<Mesh> GetOpenElements( const Mesh & m, int dom = 0, bool only_quads = false )
     {
         static Timer t("GetOpenElements"); RegionTimer rt(t);
         auto mesh = make_unique<Mesh>();
@@ -40,7 +40,8 @@ namespace netgen
         mesh->ClearSurfaceElements();
 
         for (auto & el : openelements)
-            mesh->AddSurfaceElement( el );
+            if(!only_quads || el.GetNP() == 4)
+                mesh->AddSurfaceElement( el );
 
         mesh->Compress();
         return mesh;
diff --git a/libsrc/meshing/debugging.hpp b/libsrc/meshing/debugging.hpp
index 726fb203..b8c0ef7e 100644
--- a/libsrc/meshing/debugging.hpp
+++ b/libsrc/meshing/debugging.hpp
@@ -3,7 +3,7 @@
 
 namespace netgen
 {
-    unique_ptr<Mesh> GetOpenElements( const Mesh & m, int dom = 0 );
+    unique_ptr<Mesh> GetOpenElements( const Mesh & m, int dom = 0, bool only_quads = false );
 
     unique_ptr<Mesh> FilterMesh( const Mesh & m, FlatArray<PointIndex> points, FlatArray<SurfaceElementIndex> sels = Array<SurfaceElementIndex>{}, FlatArray<ElementIndex> els = Array<ElementIndex>{} );
 
diff --git a/libsrc/meshing/meshfunc.cpp b/libsrc/meshing/meshfunc.cpp
index 48d13c21..babe1f98 100644
--- a/libsrc/meshing/meshfunc.cpp
+++ b/libsrc/meshing/meshfunc.cpp
@@ -363,6 +363,7 @@ namespace netgen
       if(debugparam.write_mesh_on_error) {
         md.mesh->Save("open_quads_starting_mesh_"+ToString(md.domain)+".vol.gz");
         GetOpenElements(*md.mesh, md.domain)->Save("open_quads_rest_" + ToString(md.domain)+".vol.gz");
+        GetOpenElements(*md.mesh, md.domain, true)->Save("open_quads_rest_" + ToString(md.domain)+"_only_quads.vol.gz");
       }
       PrintSysError ("mesh has still open quads");
       throw NgException ("Stop meshing since too many attempts");