diff --git a/view-webapp/src/main/webapp/js/tour-information.inc.js b/view-webapp/src/main/webapp/js/tour-information.inc.js
index 1f43858..a009703 100644
--- a/view-webapp/src/main/webapp/js/tour-information.inc.js
+++ b/view-webapp/src/main/webapp/js/tour-information.inc.js
@@ -278,4 +278,12 @@ onLoad(() => {
   shortName.on('input', e => {
     manualShortName = true;
   });
+
+  $('select[name="pairing"]').on('change', e => {
+    let pairing = e.target.value.toLowerCase();
+    if (pairing === 'mms') $('#tournament-infos .mms').removeClass('hidden');
+    else $('#tournament-infos .mms').addClass('hidden');
+    if (pairing === 'swiss') $('#tournament-infos .swiss').removeClass('hidden');
+    else $('#tournament-infos .swiss').addClass('hidden');
+  });
 });
diff --git a/view-webapp/src/main/webapp/tour-information.inc.html b/view-webapp/src/main/webapp/tour-information.inc.html
index b7a43aa..9571549 100644
--- a/view-webapp/src/main/webapp/tour-information.inc.html
+++ b/view-webapp/src/main/webapp/tour-information.inc.html
@@ -89,7 +89,7 @@
         <div class="four wide field">
           <label>Pairing</label>
           <span class="info"></span>
-          <select name="pairing">
+          <select name="pairing" #if($tour)disabled#end>
             <option value="MAC_MAHON" #if(!$tour || $tour.pairing.type == 'MAC_MAHON') selected #end>Mac Mahon</option>
             <option value="SWISS" #if($tour && $tour.pairing.type == 'SWISS') selected #end>Swiss</option>
             ## TODO <option value="ROUND_ROBIN" #if($tour && $tour.pairing.type == 'ROUND_ROBIN') selected #end>Round-robin</option>