diff --git a/_src/adapter/adapter.js b/_src/adapter/adapter.js
index 66fc5816..e04dedb7 100644
--- a/_src/adapter/adapter.js
+++ b/_src/adapter/adapter.js
@@ -123,7 +123,7 @@
                 if(options.initialFrameWidth){
                     options.minFrameWidth = options.initialFrameWidth
                 }else{
-                    options.minFrameWidth = options.initialFrameWidth = editor.$body.width() || UM.defaultWidth;
+                    options.minFrameWidth = options.initialFrameWidth = editor.$body.outerWidth() || UM.defaultWidth;
                 }
 
                 $container.css({