diff --git a/src/gridstack.js b/src/gridstack.js
index 4587c48..4afdcfc 100644
--- a/src/gridstack.js
+++ b/src/gridstack.js
@@ -550,7 +550,7 @@
     };
 
     GridStack.prototype._is_one_column_mode = function () {
-        return $(window).width() <= this.opts.min_width;
+        return (window.innerWidth || document.documentElement.clientWidth || document.body.clientWidth) <= this.opts.min_width;
     };
 
     GridStack.prototype._prepare_element = function (el) {