diff --git a/source/engine/import/importerobj.js b/source/engine/import/importerobj.js
index 839a6b4..897bcee 100644
--- a/source/engine/import/importerobj.js
+++ b/source/engine/import/importerobj.js
@@ -394,7 +394,8 @@ export class ImporterObj extends ImporterBase
 
         let vertices = [];
         for (let i = 0; i < parameters.length; i++) {
-            let vertexIndex = this.GetRelativeIndex (parseInt (parameters[i], 10), this.globalVertices.length);
+            let vertexParams = parameters[i].split ('/');
+            let vertexIndex = this.GetRelativeIndex (parseInt (vertexParams[0], 10), this.globalVertices.length);
             let meshVertexIndex = this.currentMeshConverter.AddVertex (vertexIndex, this.globalVertices);
             if (meshVertexIndex === null) {
                 this.SetError ('Invalid vertex index.');
diff --git a/test/testfiles/obj/lines_with_vt.obj b/test/testfiles/obj/lines_with_vt.obj
new file mode 100644
index 0000000..c3545ba
--- /dev/null
+++ b/test/testfiles/obj/lines_with_vt.obj
@@ -0,0 +1,11 @@
+v 0.0 0.0 0.0
+v 1.0 0.0 0.0
+v 1.0 1.0 0.0
+v 0.0 1.0 0.0
+v 0.0 0.0 1.0
+v 1.0 0.0 1.0
+v 1.0 1.0 1.0
+v 0.0 1.0 1.0
+l 1/1 2/2
+l 3/3 4/4
+l 5/5 6/6 7/7 8/8 5/5
diff --git a/test/tests/importerobj_test.js b/test/tests/importerobj_test.js
index 3afec30..b636a08 100644
--- a/test/tests/importerobj_test.js
+++ b/test/tests/importerobj_test.js
@@ -685,6 +685,39 @@ describe ('Obj Importer', function () {
         });
     });
 
+    it ('lines_with_vt.obj', function (done) {
+        ImportObjFile ('lines_with_vt.obj', function (model) {
+            assert.ok (OV.CheckModel (model));
+            assert.deepStrictEqual (ModelToObject (model), {
+                name : '',
+                materials : [
+                    { name : '' }
+                ],
+                meshes : [
+                    {
+                        name : '',
+                        lines : [
+                            {
+                                vertices : [0, 0, 0, 1, 0, 0],
+                                mat : 0
+                            },
+                            {
+                                vertices : [1, 1, 0, 0, 1, 0],
+                                mat : 0
+                            },
+                            {
+                                vertices : [0, 0, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 0, 0, 1],
+                                mat : 0
+                            }
+                        ],
+                        triangles : []
+                    }
+                ]
+            });
+            done ();
+        });
+    });
+
     it ('lines_in_meshes.obj', function (done) {
         ImportObjFile ('lines_in_meshes.obj', function (model) {
             assert.ok (OV.CheckModel (model));