diff --git a/package.json b/package.json
index b23179a8..9ac6c82f 100755
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "vts-browser-js",
-  "version": "2.1.2",
+  "version": "2.1.3",
   "description": "JavaScript WebGL 3D maps rendering engine",
   "main": "src/browser/index.js",
   "scripts": {
diff --git a/src/core/core.js b/src/core/core.js
index ce585bf8..31aa38c5 100755
--- a/src/core/core.js
+++ b/src/core/core.js
@@ -465,7 +465,7 @@ string getCoreVersion()
 */
 
 function getCoreVersion(full) {
-    return (full ? 'Core: ' : '') + '2.1.2';
+    return (full ? 'Core: ' : '') + '2.1.3';
 }
 
 
diff --git a/src/core/index.js b/src/core/index.js
index 74dd1d3d..525c7f85 100644
--- a/src/core/index.js
+++ b/src/core/index.js
@@ -4,7 +4,6 @@ import {CoreInterface as CoreInterface_} from './interface';
 import {vec2 as vec2_, vec3 as vec3_, vec4 as vec4_, mat3 as mat3_, mat4 as mat4_} from './utils/matrix';
 import {utils as utils_} from './utils/utils';
 import {math as math_} from './utils/math';
-import {Core as Core_} from './core';
 
 //get rid of compiler mess
 var getCoreVersion = getCoreVersion_, checkSupport = checkSupport_;
@@ -12,7 +11,6 @@ var CoreInterface = CoreInterface_;
 var vec2 = vec2_, vec3 = vec3_, vec4 = vec4_, mat3 = mat3_, mat4 = mat4_;
 var utils = utils_;
 var math = math_;
-var Core = Core_;
 var proj4 = Proj4;