diff --git a/module/bug/css/browse.css b/module/bug/css/browse.css
index 406bc0ef7e..4c51f2e6b5 100644
--- a/module/bug/css/browse.css
+++ b/module/bug/css/browse.css
@@ -4,3 +4,8 @@
 .confirm0 {color:gray;  font-size:9px}
 .confirm1 {color:green; font-size:9px}
 .red{color:red;}
+
+.assign-menu {min-width: 150px; overflow: hidden; max-height: 305px}
+.assign-menu.with-search {padding-bottom: 34px;}
+.assign-menu > .assign-search {padding: 0; position: absolute; z-index: 0; bottom: 0; left: 0; right: 0}
+.assign-menu > .assign-search .input-group-addon {position: absolute; right: 10px; top: 0; z-index: 10; background: none; border: none; color: #666}
diff --git a/module/bug/js/browse.js b/module/bug/js/browse.js
index b0d47891e5..4dc58de983 100644
--- a/module/bug/js/browse.js
+++ b/module/bug/js/browse.js
@@ -3,4 +3,18 @@ $(document).ready(function()
     $('#' + browseType + 'Tab').addClass('active'); 
     $('#module' + moduleID).addClass('active'); 
     if(browseType == 'bysearch') ajaxGetSearchForm();
+
+    $('.assign-search').click(function(e)
+    {
+        e.stopPropagation();
+        return false;
+    }).on('keyup change paste', 'input', function()
+    {
+        var val = $(this).val().toLowerCase();
+        $('.assign-menu > .option').each(function()
+        {
+            var $option = $(this);
+            $option.toggleClass('hide', $option.text().toLowerCase().indexOf(val) < 0 && $option.data('key').toLowerCase().indexOf(val) < 0);
+        });
+    });
 });
diff --git a/module/bug/view/browse.html.php b/module/bug/view/browse.html.php
index 8f8ed62caf..013c9dc5b9 100644
--- a/module/bug/view/browse.html.php
+++ b/module/bug/view/browse.html.php
@@ -226,24 +226,27 @@ js::set('moduleID', $moduleID);
                       }
                   }
                   echo '</ul></li>';
+                  $canBatchAssignTo = common::hasPriv('bug', 'batchAssignTo');
+                  if($canBatchAssignTo && count($bugs))
+                  {   
+                      $withSearch = count($memberPairs) > 10;
+                      $actionLink = $this->createLink('bug', 'batchAssignTo', "productID={$productID}&type=product");
+                      echo html::select('assignedTo', $memberPairs, '', 'class="hidden"');
+                      echo "<li class='dropdown-submenu'>";
+                      echo html::a('javascript::', $lang->bug->assignedTo, 'id="assignItem"');
+                      echo "<ul class='dropdown-menu assign-menu" . ($withSearch ? ' with-search':'') . "'>";
+                      foreach ($memberPairs as $key => $value)
+                      {
+                          if(empty($key)) continue;
+                          echo "<li class='option' data-key='$key'>" . html::a("javascript:$(\"#assignedTo\").val(\"$key\");setFormAction(\"$actionLink\")", $value, '', '') . '</li>';
+                      }
+                      if($withSearch) echo "<li class='assign-search'><div class='input-group input-group-sm'><input type='text' class='form-control' placeholder=''><span class='input-group-addon'><i class='icon-search'></i></span></div></li>";
+                      echo "</ul>";
+                      echo "</li>";
+                  }
                   ?>
                 </ul>
               </div>
-              <?php 
-              $canBatchAssignTo = common::hasPriv('bug', 'batchAssignTo');
-              if(count($bugs))
-              {
-                  if($canBatchAssignTo)
-                  {
-                      $actionLink = $this->createLink('bug', 'batchAssignTo', "productID={$productID}&type=product");
-                      echo "<div class='input-group w-150px'>";
-                      echo html::select('assignedTo', $memberPairs, '', 'class="form-control chosen"');
-                      echo "<span class='input-group-addon'>";
-                      echo html::a("javascript:setFormAction(\"$actionLink\")", $lang->bug->assignTo);
-                      echo '</span></div>';
-                  }
-              }
-              ?>
             </div>
             <?php endif?>
             <div class='text-right'><?php $pager->show();?></div>