diff --git a/module/common/view/chosen.html.php b/module/common/view/chosen.html.php
index a1c26d0c61..b60c0b593e 100755
--- a/module/common/view/chosen.html.php
+++ b/module/common/view/chosen.html.php
@@ -9,7 +9,7 @@ if($config->debug)
 <script> 
 noResultsMatch       = '<?php echo $lang->noResultsMatch;?>';
 chooseUsersToMail    = '<?php echo $lang->chooseUsersToMail;?>';
-defaultChosenOptions = {no_results_text: noResultsMatch, allow_single_deselect: true, disable_search_threshold: 1, placeholder_text_single: ' ', placeholder_text_multiple: ' ', search_contains: true};
+defaultChosenOptions = {no_results_text: noResultsMatch, width:'100%', allow_single_deselect: true, disable_search_threshold: 1, placeholder_text_single: ' ', placeholder_text_multiple: ' ', search_contains: true};
 $(document).ready(function()
 {
     $("#mailto").attr('data-placeholder', chooseUsersToMail);
diff --git a/module/task/js/batchcreate.js b/module/task/js/batchcreate.js
index 776f965f4f..908fe6f1f1 100755
--- a/module/task/js/batchcreate.js
+++ b/module/task/js/batchcreate.js
@@ -1,3 +1,6 @@
+/* Remove width in defaultChosenOptions. */
+delete defaultChosenOptions.width;
+
 /* Get select of stories.*/
 function setStories(moduleID, projectID, num)
 {