diff --git a/src/Mod/MeshPart/App/MeshFlatteningBoostPython.cpp b/src/Mod/MeshPart/App/MeshFlatteningBoostPython.cpp
index 261d13696b..0306ba070e 100644
--- a/src/Mod/MeshPart/App/MeshFlatteningBoostPython.cpp
+++ b/src/Mod/MeshPart/App/MeshFlatteningBoostPython.cpp
@@ -100,7 +100,7 @@ boost::shared_ptr<FaceUnwrapper> FaceUnwrapper_mesh(const py::object& points,
         ColMat<double, 3> coords;
         coords.resize(l1.size(), 3);
         int row = 0;
-        for (Py::Sequence::iterator it = l1.begin(); it != l1.end(); ++it) {
+        for (Py::Sequence::iterator it = l1.begin(); it != l1.end(); ++it, ++row) {
             Py::Sequence c(*it);
             int col = 0;
             for (Py::Sequence::iterator jt = c.begin(); jt != c.end(); ++jt, ++col) {
@@ -112,7 +112,8 @@ boost::shared_ptr<FaceUnwrapper> FaceUnwrapper_mesh(const py::object& points,
         Py::Sequence l2(facets.ptr());
         ColMat<long, 3> triangles;
         triangles.resize(l2.size(), 3);
-        for (Py::Sequence::iterator it = l2.begin(); it != l2.end(); ++it) {
+        row = 0;
+        for (Py::Sequence::iterator it = l2.begin(); it != l2.end(); ++it, ++row) {
             Py::Sequence c(*it);
             int col = 0;
             for (Py::Sequence::iterator jt = c.begin(); jt != c.end(); ++jt, ++col) {
diff --git a/src/Mod/MeshPart/Gui/MeshFlatteningCommand.py b/src/Mod/MeshPart/Gui/MeshFlatteningCommand.py
index c62bf893d7..71bcd674bb 100644
--- a/src/Mod/MeshPart/Gui/MeshFlatteningCommand.py
+++ b/src/Mod/MeshPart/Gui/MeshFlatteningCommand.py
@@ -29,8 +29,8 @@ class CreateFlatMesh(BaseCommand):
         flattener = flatmesh.FaceUnwrapper(points, faces)
         flattener.findFlatNodes(5, 0.95)
         boundaries = flattener.getFlatBoundaryNodes()
-        print('number of nodes: {}'.format(len(flattener.ze_nodes)))
-        print('number of faces: {}'.format(len(flattener.tris)))
+        #print('number of nodes: {}'.format(len(flattener.ze_nodes)))
+        #print('number of faces: {}'.format(len(flattener.tris)))
 
         wires = []
         for edge in boundaries: