diff --git a/templates/renater/web/select_sp.tt2.html b/templates/renater/web/select_sp.tt2.html
index f489ff7e05334075543a20d18735453ec7a77218..8633dedb4af9c4a4b7eda6152402975b9a09639c 100644
--- a/templates/renater/web/select_sp.tt2.html
+++ b/templates/renater/web/select_sp.tt2.html
@@ -18,7 +18,7 @@
 
         <fieldset>
             <legend for="entityid">[% lh.maketext("Type the name or entityID of service to test:") %]</legend>
-            <select id="entityid" name="entityid">
+            <select id="entityid" name="entityid" class="required">
                 <option value=""></option>
             [% FOREACH entity IN metadata.sort('display_name') %]
                 <option value="[% entity.entityid %]">[% entity.display_name %]</option>
diff --git a/templates/web/select_sp.tt2.html b/templates/web/select_sp.tt2.html
index 1e28d39853f1e51fe46db2fa9024d36329a05c2e..09cc6ecd774b98dd4b99f36f3fe0b8a73fb07c6c 100644
--- a/templates/web/select_sp.tt2.html
+++ b/templates/web/select_sp.tt2.html
@@ -18,7 +18,7 @@
 
         <fieldset>
             <legend for="entityid">[% lh.maketext("Type the name or entityID of service to test:") %]</legend>
-            <select id="entityid" name="entityid">
+            <select id="entityid" name="entityid" class="required">
                 <option value=""></option>
             [% FOREACH entity IN metadata.sort('display_name') %]
                 <option value="[% entity.entityid %]">[% entity.display_name %]</option>