diff --git a/dist/gridstack.js b/dist/gridstack.js
index 4c5880909..8c08a5f33 100644
--- a/dist/gridstack.js
+++ b/dist/gridstack.js
@@ -6,7 +6,9 @@
  * @preserve
 */
 (function(factory) {
-    if (typeof define === 'function' && define.amd) {
+    if ($ && _) {
+        factory($, _);
+    } else if (typeof define === 'function' && define.amd) {
         define(['jquery', 'lodash', 'jquery-ui/core', 'jquery-ui/widget', 'jquery-ui/mouse', 'jquery-ui/draggable',
             'jquery-ui/resizable'], factory);
     } else if (typeof exports !== 'undefined') {
diff --git a/src/gridstack.js b/src/gridstack.js
index fe2126be2..8a284d211 100644
--- a/src/gridstack.js
+++ b/src/gridstack.js
@@ -6,7 +6,9 @@
  * @preserve
 */
 (function(factory) {
-    if (typeof define === 'function' && define.amd) {
+    if ($ && _) {
+        factory($, _);
+    } else if (typeof define === 'function' && define.amd) {
         define(['jquery', 'lodash', 'jquery-ui/core', 'jquery-ui/widget', 'jquery-ui/mouse', 'jquery-ui/draggable',
             'jquery-ui/resizable'], factory);
     } else if (typeof exports !== 'undefined') {