diff --git a/libsrc/meshing/meshing2.cpp b/libsrc/meshing/meshing2.cpp
index 3c54faba..a5a1b7c8 100644
--- a/libsrc/meshing/meshing2.cpp
+++ b/libsrc/meshing/meshing2.cpp
@@ -505,7 +505,11 @@ namespace netgen
 
 	    // (*testout) << endl;
 
-	    //	    (*testout) << "3d->2d transformation" << endl;
+	    if (debugflag)
+	      {
+		*testout << "3d->2d transformation" << endl;
+		*testout << "3d points: " << endl << locpoints << endl;
+	      }
 
 	    for (int i = 1; i <= locpoints.Size(); i++)
 	      {
@@ -520,6 +524,10 @@ namespace netgen
 	    //	    (*testout) << endl << endl << endl;
 
 
+	    if (debugflag)
+	      *testout << "2d points: " << endl << plainpoints << endl;
+
+
 	    p12d = plainpoints.Get(1);
 	    p22d = plainpoints.Get(2);