diff --git a/templates/dispositivo/add.htm b/templates/dispositivo/add.htm
index 2d634b2..cc52f9d 100644
--- a/templates/dispositivo/add.htm
+++ b/templates/dispositivo/add.htm
@@ -44,8 +44,8 @@
         <div class="form-group">
             <label class="col-xs-2" for="form-utente">Utenti</label>
             <div class="col-xs-10" id="users-column">
-                <div id="add-user" class="btn btn-success" onclick="adduser()">+</div>
-                <div id="remove-user" class="btn btn-danger disabled" onclick="removeuser()">-</div>
+                <div id="add-user" class="btn btn-success" onclick="adduser()"><span class="glyphicon glyphicon-plus"></span></div>
+                <div id="remove-user" class="btn btn-danger disabled" onclick="removeuser()"><span class="glyphicon glyphicon-minus"></span></div>
             </div>
         </div>
         <div class="form-group">