diff --git a/src/DataHandling/Model3D.cpp b/src/DataHandling/Model3D.cpp
index b46e711..bc9fafd 100644
--- a/src/DataHandling/Model3D.cpp
+++ b/src/DataHandling/Model3D.cpp
@@ -53,7 +53,7 @@ void Model3D::draw_model()
 
     for (uint32_t i = 0;i<face_count;i++)
     {
-        Vec3i face = faces[i];
+        Vec3i& face = faces[i];
 
         Vec3i* face_texture;
         if (is_textured)
@@ -68,7 +68,7 @@ void Model3D::draw_model()
 
             if (is_textured)
             {
-                Vec2f vertex_texture = texture_coordinates[face_texture->coordinates[j]];
+                Vec2f& vertex_texture = texture_coordinates[face_texture->coordinates[j]];
                 glTexCoord2f(vertex_texture.x,vertex_texture.y);
             }
             glVertex3f(vertex.x,vertex.y,vertex.z);
diff --git a/src/Vectors.h b/src/Vectors.h
index db563ab..2991d92 100644
--- a/src/Vectors.h
+++ b/src/Vectors.h
@@ -150,7 +150,7 @@ struct Vec3 : CoordinatesVector<T,3>
     {
         if (this != &original)
         {
-            std::copy(std::begin(original.coordinates), std::end(original.coordinates), std::begin(CoordinatesVector<T,2>::coordinates));
+            std::copy(std::begin(original.coordinates), std::end(original.coordinates), std::begin(CoordinatesVector<T,3>::coordinates));
         }
     }
 
diff --git a/src/main.cpp b/src/main.cpp
index 3195bc4..c36a79c 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -21,6 +21,11 @@ void manage_inputs()
     {
         glClearColor(0.5,0,0,1);
     }
+    else if (KeyStateManager::is_key_pressed(0x1B))
+    {
+        glutDestroyWindow(glutGetWindow());
+        exit(EXIT_SUCCESS);
+    }
     else
     {
         glClearColor(0,0,0,1);