diff --git a/index.html b/index.html
index 635cef7dd6..bfa49c56d4 100644
--- a/index.html
+++ b/index.html
@@ -54,7 +54,7 @@ this repository contains the full copyright notices and license terms. -->
                     </a>
                 </div>
                 <div class="collapse navbar-collapse" id="main_navbar">
-                    <form class="navbar-form navbar-left flip" role="search" id="global-search">
+                    <form class="navbar-form navbar-left flip" role="search" id="global-search" style="border-style: none;">
                     </form>
                     <ul class="nav navbar-nav navbar-right flip">
                         <li id="user-preferences"></li>