diff --git a/module/bug/model.php b/module/bug/model.php
index 7da790b4c1..3ac06b9ceb 100644
--- a/module/bug/model.php
+++ b/module/bug/model.php
@@ -3587,7 +3587,7 @@ class bugModel extends model
         $btnClass    .= ' iframe btn btn-icon-left btn-sm';
 
         $assignToLink = helper::createLink('bug', 'assignTo', "bugID=$bug->id", '', true);
-        $assignToHtml = html::a($assignToLink, "<i class='icon icon-hand-right'></i> <span title='" . zget($users, $bug->assignedTo) . "'>{$assignedToText}</span>", '', "class='$btnClass'");
+        $assignToHtml = html::a($assignToLink, "<i class='icon icon-hand-right'></i> <span title='" . zget($users, $bug->assignedTo) . "'>{$assignedToText}</span>", '', "class='$btnClass' data-toggle='modal'");
 
         $html = !common::hasPriv('bug', 'assignTo', $bug) ? "<span style='padding-left: 21px' class='{$btnTextClass}'>{$assignedToText}</span>" : $assignToHtml;
         if(!$output) return $html;