diff --git a/src/main.cpp b/src/main.cpp
index 24b30ec..0dfd3d5 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,6 +1,7 @@
 #include "my_mesh.h"
 
 #include <iostream>
+#include <fstream>
 
 
 bool check_faces_are_triangles(MyMesh &mesh) {
@@ -39,15 +40,15 @@ bool check_vertices_arent_lonely(MyMesh &mesh) {
 }
 
 
-bool check_edges_arent_lonely(MyMesh &mesh) {
-	MyMesh::HalfedgeHandle heh, heh_init;
-	heh = heh_init = mesh.halfedge_handle((*mesh.vertices_begin()));
-	heh = mesh.next_halfedge_handle(heh);
-	while (heh != heh_init) {
-		if (mesh.is_boundary(heh)) {
-			return false;
-		}
-		heh = mesh.next_halfedge_handle(heh);
+bool check_edges_arent_lonely(const char *path) {
+	using namespace std;
+	ifstream f(path);
+	string line;
+	while (getline(f, line)) {
+		istringstream iss(line);
+		char first;
+		iss >> first;
+		if (first == 'l') return false;
 	}
 	return true;
 }
@@ -72,7 +73,7 @@ int main(int argc, char *argv[]) {
 		 << (check_vertices_arent_lonely(mesh) ? "oui" : "non")
 		 << endl;
 	cout << "Les arêtes sont sur une face : "
-		 << (check_edges_arent_lonely(mesh) ? "oui" : "non")
+		 << (check_edges_arent_lonely(argv[1]) ? "oui" : "non")
 		 << endl;
 	return 0;
 }