diff --git a/game-lib.js b/game-lib.js
index 414a4f1..33bf4d6 100644
--- a/game-lib.js
+++ b/game-lib.js
@@ -1921,7 +1921,7 @@ GameLib.D3.prototype.loadMap = function(gameLibTexture, threeMaterial, threeMate
                 threeMaterial[threeMaterialMapType].minFilter = gameLibTexture.minFilter;
                 threeMaterial[threeMaterialMapType].mapping = gameLibTexture.mapping;
                 threeMaterial[threeMaterialMapType].mipmaps = gameLibTexture.mipmaps;
-                threeMaterial[threeMaterialMapType].offset = new THREE.Vector2(
+                threeMaterial[threeMaterialMapType].offset = new this.THREE.Vector2(
                     gameLibTexture.offset.x,
                     gameLibTexture.offset.y
                 );