diff --git a/src/extras/geometries/CubeGeometry.js b/src/extras/geometries/CubeGeometry.js
index 7f2bce76f43c7487bb6246795641b32805a3ed90..2007cc01ed363b75961a2275b55863db26d7a7d9 100644
--- a/src/extras/geometries/CubeGeometry.js
+++ b/src/extras/geometries/CubeGeometry.js
@@ -104,7 +104,7 @@ THREE.CubeGeometry = function ( width, height, depth, widthSegments, heightSegme
 				face.materialIndex = materialIndex;
 
 				scope.faces.push( face );
-				scope.faceVertexUvs[ 0 ].push( [ uvb, uvc, uvd ] );
+				scope.faceVertexUvs[ 0 ].push( [ uvb.clone(), uvc, uvd.clone() ] );
 
 			}