diff --git a/src/js/select2/dropdown/attachBody.js b/src/js/select2/dropdown/attachBody.js
index 967252f7..0b6d96c2 100644
--- a/src/js/select2/dropdown/attachBody.js
+++ b/src/js/select2/dropdown/attachBody.js
@@ -204,6 +204,7 @@ define([
 
     if (this.options.get('dropdownAutoWidth')) {
       css.minWidth = css.width;
+      css.position = 'relative';
       css.width = 'auto';
     }