diff --git a/Polygon_mesh_processing/doc/Polygon_mesh_processing/fig/mesh_smothing.png b/Polygon_mesh_processing/doc/Polygon_mesh_processing/fig/mesh_smoothing.png
similarity index 100%
rename from Polygon_mesh_processing/doc/Polygon_mesh_processing/fig/mesh_smothing.png
rename to Polygon_mesh_processing/doc/Polygon_mesh_processing/fig/mesh_smoothing.png
diff --git a/Polygon_mesh_processing/include/CGAL/Polygon_mesh_processing/smooth_shape.h b/Polygon_mesh_processing/include/CGAL/Polygon_mesh_processing/smooth_shape.h
index 2ce20b09db8..f80f55350ba 100644
--- a/Polygon_mesh_processing/include/CGAL/Polygon_mesh_processing/smooth_shape.h
+++ b/Polygon_mesh_processing/include/CGAL/Polygon_mesh_processing/smooth_shape.h
@@ -160,9 +160,16 @@ void smooth_shape(const FaceRange& faces,
     smoother.setup_system(A, bx, by, bz, stiffness, time);
 
     if(smoother.solve_system(A, Xx, Xy, Xz, bx, by, bz, solver))
+    {
       smoother.update_mesh(Xx, Xy, Xz);
+    }
     else
+    {
+#ifdef CGAL_PMP_SMOOTHING_VERBOSE
+      std::cerr << "Failed to solve system!" << std::endl;
+#endif
       break;
+    }
 
 #ifdef CGAL_PMP_SMOOTHING_OUTPUT_INTERMEDIARY_STEPS
     std::stringstream oss;