diff --git a/lib/torque/gmaps/canvas_tile_layer.js b/lib/torque/gmaps/canvas_tile_layer.js
index 302d774..7b59efe 100644
--- a/lib/torque/gmaps/canvas_tile_layer.js
+++ b/lib/torque/gmaps/canvas_tile_layer.js
@@ -4,6 +4,8 @@
  ====================
  */
 
+if(typeof(google) !== 'undefined' && typeof(google.maps) !== 'undefined') {
+
 function CanvasTileLayer(canvas_setup, render) {
   this.tileSize = new google.maps.Size(256, 256);
   this.maxZoom = 19;
@@ -92,3 +94,5 @@ CanvasTileLayer.prototype.releaseTile = function (tile) {
   var id = tile.getAttribute('id');
   delete this.tiles[id];
 };
+
+}
diff --git a/lib/torque/gmaps/gmaps_tileloader_mixin.js b/lib/torque/gmaps/gmaps_tileloader_mixin.js
index 7d79436..d98dc93 100644
--- a/lib/torque/gmaps/gmaps_tileloader_mixin.js
+++ b/lib/torque/gmaps/gmaps_tileloader_mixin.js
@@ -1,5 +1,7 @@
 (function(exports) {
 
+if(typeof(google) === 'undefined' || typeof(google.maps) === 'undefined') return;
+
 function GMapsTileLoader() {
 }
 
diff --git a/lib/torque/gmaps/torque.js b/lib/torque/gmaps/torque.js
index 983039e..7ee5287 100644
--- a/lib/torque/gmaps/torque.js
+++ b/lib/torque/gmaps/torque.js
@@ -1,5 +1,7 @@
 (function(exports) {
 
+if(typeof(google) === 'undefined' || typeof(google.maps) === 'undefined') return;
+
 function GMapsTorqueLayer(options) {
   var self = this;
   this.key = 0;