diff --git a/lib/OpenLayers/Layer/WMTS.js b/lib/OpenLayers/Layer/WMTS.js
index ad3822db63..bf4cc5a38f 100644
--- a/lib/OpenLayers/Layer/WMTS.js
+++ b/lib/OpenLayers/Layer/WMTS.js
@@ -417,19 +417,10 @@ OpenLayers.Layer.WMTS = OpenLayers.Class(OpenLayers.Layer.Grid, {
             var matrixId = this.matrix.identifier;
             var dimensions = this.dimensions, params;
 
-            if (OpenLayers.Util.isArray(this.url)) {
-                url = this.selectUrl([
-                    this.version, this.style, this.matrixSet,
-                    this.matrix.identifier, info.row, info.col
-                ].join(","), this.url);
-            } else {
-                url = this.url;
-            }
-
             if (this.requestEncoding.toUpperCase() === "REST") {
                 params = this.params;
-                if (url.indexOf("{") !== -1) {
-                    var template = url.replace(/\{/g, "${");
+                if (typeof this.url === "string" && this.url.indexOf("{") !== -1) {
+                    var template = this.url.replace(/\{/g, "${");
                     var context = {
                         // spec does not make clear if capital S or not
                         style: this.style, Style: this.style,
@@ -463,6 +454,11 @@ OpenLayers.Layer.WMTS = OpenLayers.Class(OpenLayers.Layer.Grid, {
                     path = path + this.matrixSet + "/" + this.matrix.identifier + 
                         "/" + info.row + "/" + info.col + "." + this.formatSuffix;
 
+                    if (OpenLayers.Util.isArray(this.url)) {
+                        url = this.selectUrl(path, this.url);
+                    } else {
+                        url = this.url;
+                    }
                     if (!url.match(/\/$/)) {
                         url = url + "/";
                     }