diff --git a/types/three/index.d.ts b/types/three/index.d.ts
index 08b64250c8..420d48fe67 100644
--- a/types/three/index.d.ts
+++ b/types/three/index.d.ts
@@ -25,6 +25,7 @@
 //                 Zhang Hao <https://github.com/devilsparta>
 //                 Konstantin Lukaschenko <https://github.com/KonstantinLukaschenko>
 //                 Daniel Yim <https://github.com/danyim>
+//                 Philippe Suter <https://github.com/psuter>
 // Definitions: https://github.com//DefinitelyTyped
 // TypeScript Version: 2.8
 
diff --git a/types/three/three-core.d.ts b/types/three/three-core.d.ts
index 7d871cae58..e7291b9402 100755
--- a/types/three/three-core.d.ts
+++ b/types/three/three-core.d.ts
@@ -5273,13 +5273,23 @@ export class Line extends Object3D {
     geometry: Geometry | BufferGeometry;
     material: Material | Material[];
 
-    type: "Line";
+    type: "Line" | "LineLoop" | "LineSegments";
     isLine: true;
 
     computeLineDistances(): this;
     raycast(raycaster: Raycaster, intersects: Intersection[]): void;
 }
 
+export class LineLoop extends Line {
+    constructor(
+        geometry?: Geometry | BufferGeometry,
+        material?: Material | Material[]
+    );
+
+    type: "LineLoop";
+    isLineLoop: true;
+}
+
 /**
  * @deprecated
  */
@@ -5295,6 +5305,9 @@ export class LineSegments extends Line {
         material?: Material | Material[],
         mode?: number
     );
+    
+    type: "LineSegments";
+    isLineSegments: true;
 }
 
 export class Mesh extends Object3D {