diff --git a/types/obj-file-parser/index.d.ts b/types/obj-file-parser/index.d.ts
index a60b967c7c..b8eb270b5a 100644
--- a/types/obj-file-parser/index.d.ts
+++ b/types/obj-file-parser/index.d.ts
@@ -1,9 +1,8 @@
 // Type definitions for obj-file-parser 0.5
-// Project: https://github.com/WesUnwin/obj-file-parser#readme
-// Definitions by: Ben Coleman https://github.com/benc-uk
+// Project: https://github.com/wesunwin/obj-file-parser
+// Definitions by: Ben Coleman <https://github.com/benc-uk>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
-
 export default class Parser {
     constructor(fileContents: any, defaultModelName?: any);
     parse(): ObjFile;
@@ -16,17 +15,17 @@ export interface ObjFile {
 
 export class ObjModel {
     name: string;
-    vertices: {x: number, y: number, z: number}[];
-    textureCoords: {u: number, v: number, w: number}[];
-    vertexNormals: {x: number, y: number, z: number}[];
+    vertices: number[];
+    textureCoords: number[];
+    vertexNormals: number[];
     faces: Face[];
-}    
+}
 
 export class Face {
     material: any;
     group: string;
     smoothingGroup: number;
-    vertices: FaceVertex[]
+    vertices: FaceVertex[];
 }
 
 export class FaceVertex {
diff --git a/types/obj-file-parser/obj-file-parser-tests.ts b/types/obj-file-parser/obj-file-parser-tests.ts
index b123098bfa..6dbf5f255a 100644
--- a/types/obj-file-parser/obj-file-parser-tests.ts
+++ b/types/obj-file-parser/obj-file-parser-tests.ts
@@ -1,11 +1,11 @@
-import ObjFileParser, { ObjModel, ObjFile } from 'obj-file-parser'
+import ObjFileParser, { ObjModel, ObjFile } from 'obj-file-parser';
 
-let testObjFile = `
+const testObjFile = `
 # cube.obj
 # Example object
 
 g cube
- 
+
 v  0.0  0.0  0.0
 v  0.0  0.0  1.0
 v  0.0  1.0  0.0
@@ -21,31 +21,31 @@ vn  0.0  1.0  0.0
 vn  0.0 -1.0  0.0
 vn  1.0  0.0  0.0
 vn -1.0  0.0  0.0
- 
+
 g cube-faces
 
 f  1//2  7//2  5//2
-f  1//2  3//2  7//2 
-f  1//6  4//6  3//6 
-f  1//6  2//6  4//6 
-f  3//3  8//3  7//3 
-f  3//3  4//3  8//3 
-f  5//5  7//5  8//5 
-f  5//5  8//5  6//5 
-f  1//4  5//4  6//4 
-f  1//4  6//4  2//4 
-f  2//1  6//1  8//1 
-f  2//1  8//1  4//1`
+f  1//2  3//2  7//2
+f  1//6  4//6  3//6
+f  1//6  2//6  4//6
+f  3//3  8//3  7//3
+f  3//3  4//3  8//3
+f  5//5  7//5  8//5
+f  5//5  8//5  6//5
+f  1//4  5//4  6//4
+f  1//4  6//4  2//4
+f  2//1  6//1  8//1
+f  2//1  8//1  4//1`;
 
 // Create parser and load test OBJ
-let parser = new ObjFileParser(testObjFile, 'test');
-let file = parser.parse();
-let model = file.models[0];
+const parser = new ObjFileParser(testObjFile, 'test');
+const file = parser.parse();
+const model = file.models[0];
 
-let name = model.name;       // Prints "test"
-let face = model.faces[0]    // Prints faces object 
+const name = model.name;       // Prints "test"
+const face = model.faces[0];   // Prints faces object
 
 // gets { vertexIndex: 1, textureCoordsIndex: 0, vertexNormalIndex: 2 }
-let vert = face.vertices[0];
+const vert = face.vertices[0];
 // gets { x: 0, y: 0, z: 1 }
-let vertPoints = model.vertices[vert.vertexIndex];
\ No newline at end of file
+const vertPoints = model.vertices[vert.vertexIndex];
diff --git a/types/obj-file-parser/tsconfig.json b/types/obj-file-parser/tsconfig.json
index 53e324ae32..22abf3d224 100644
--- a/types/obj-file-parser/tsconfig.json
+++ b/types/obj-file-parser/tsconfig.json
@@ -7,6 +7,7 @@
         "noImplicitAny": true,
         "noImplicitThis": true,
         "strictNullChecks": true,
+        "strictFunctionTypes": true,
         "baseUrl": "../",
         "typeRoots": [
             "../"