diff --git a/libsrc/stlgeom/Makefile.am b/libsrc/stlgeom/Makefile.am
index 04e598cf..bbe009c1 100644
--- a/libsrc/stlgeom/Makefile.am
+++ b/libsrc/stlgeom/Makefile.am
@@ -8,14 +8,14 @@ lib_LTLIBRARIES = libstl.la
 
 if NGGUI
 lib_LTLIBRARIES += libstlvis.la 
+libstlvis_la_SOURCES = stlpkg.cpp vsstl.cpp
+libstlvis_la_LIBADD = libstl.la  $(top_builddir)/libsrc/visualization/libvisual.la
 endif
 
 libstl_la_SOURCES = meshstlsurface.cpp stlgeom.cpp stlgeomchart.cpp \
 	stlgeommesh.cpp stlline.cpp stltool.cpp stltopology.cpp
 
 
-libstlvis_la_SOURCES = stlpkg.cpp vsstl.cpp
-libstlvis_la_LIBADD = libstl.la
 libstl_la_LIBADD =  $(top_builddir)/libsrc/meshing/libmesh.la
 # libstlvis_la_LIBADD = libstl.la $(top_builddir)/libsrc/linalg/libla.la 
 
diff --git a/libsrc/stlgeom/meshstlsurface.cpp b/libsrc/stlgeom/meshstlsurface.cpp
index 0ab58429..98c1567a 100644
--- a/libsrc/stlgeom/meshstlsurface.cpp
+++ b/libsrc/stlgeom/meshstlsurface.cpp
@@ -730,8 +730,7 @@ void STLSurfaceMeshing1 (STLGeometry & geom,
 	compress[icompress[i]] = 0;
       
       
-      extern void Render();
-      Render();
+      mparam.Render();
     }     
   
   // NgProfiler::Print(stdout);
diff --git a/libsrc/stlgeom/stlgeommesh.cpp b/libsrc/stlgeom/stlgeommesh.cpp
index 4232375c..2d3e9084 100644
--- a/libsrc/stlgeom/stlgeommesh.cpp
+++ b/libsrc/stlgeom/stlgeommesh.cpp
@@ -1459,8 +1459,7 @@ int STLMeshingDummy (STLGeometry* stlgeometry, shared_ptr<Mesh> & mesh, MeshingP
 	      (*statout) << GetTime() << " & ";
 #endif
 
-	      extern void Render();
-	      Render();
+	      mparam.Render();
 	    }
 	  stlgeometry->surfaceoptimized = 1;
 	}
@@ -1576,8 +1575,7 @@ int STLMeshingDummy (STLGeometry* stlgeometry, shared_ptr<Mesh> & mesh, MeshingP
 		     << mesh->GetNP() << " " << '\\' << '\\' << " \\" << "hline" << endl;
 #endif
 
-	  extern void Render();
-	  Render();
+	  mparam.Render();
 	}
     }