diff --git a/lib/OpenLayers/Layer/WMTS.js b/lib/OpenLayers/Layer/WMTS.js
index 5431bc5526..b4e21ae578 100644
--- a/lib/OpenLayers/Layer/WMTS.js
+++ b/lib/OpenLayers/Layer/WMTS.js
@@ -343,7 +343,7 @@ OpenLayers.Layer.WMTS = OpenLayers.Class(OpenLayers.Layer.Grid, {
                 path = path + this.matrixSet + "/" + matrixId + "/" + row + "/" + col + "." + this.formatSuffix;
                 
                 if (this.url instanceof Array) {
-                    url = this.selectUrl(path, url);
+                    url = this.selectUrl(path, this.url);
                 } else {
                     url = this.url;
                 }