diff --git a/code/include/simple_visualize.h b/code/include/simple_visualize.h
index 8293a8c..5ae7e19 100644
--- a/code/include/simple_visualize.h
+++ b/code/include/simple_visualize.h
@@ -32,16 +32,16 @@ void cgal_to_eigen(CGAL::Surface_mesh<typename Kernel::Point_3>& mesh,
 
 template <typename Kernel>
 void simple_visualize_mesh( CGAL::Surface_mesh<typename Kernel::Point_3>& mesh, bool triangulate = true) {
-  if(CGAL::is_triangle_mesh(mesh)) {
+  if(!CGAL::is_triangle_mesh(mesh)) {
     std::cerr << "Warning: Mesh is not triangulated. Visualizer expects triangles.\n";
     
 
     if(triangulate){
-      std::cerr << "Triangulating mesh for visualization...\n";
+      std::cout << "Triangulating mesh for visualization...\n";
       CGAL::Polygon_mesh_processing::triangulate_faces(mesh);
     }
     else{
-      std::cerr << " exit without visualizetion.\n";
+      std::cout << " exit without visualizetion.\n";
       return;
     }
   }
diff --git a/code/src/apps/v0/conformallab_cli.cpp b/code/src/apps/v0/conformallab_cli.cpp
index c4df0c2..b06486d 100644
--- a/code/src/apps/v0/conformallab_cli.cpp
+++ b/code/src/apps/v0/conformallab_cli.cpp
@@ -82,6 +82,7 @@ int main(int argc, char* argv[])
 
     // CGAL -> libigl
     if(show){
+    std::cout << "Visualizing input mesh...\n";
     mesh_utils::simple_visualize_mesh<Kernel>(surface_mesh,true);
     }