diff --git a/templates/index.tpl b/templates/index.tpl
index 5e8edfc..131f213 100644
--- a/templates/index.tpl
+++ b/templates/index.tpl
@@ -102,7 +102,7 @@
                     $activite = $lesActivites[$tarif->idActivite];
                     ?>
                     <div class="activite">
-                    {if $nbTarifs == 1}
+                    {if $nbTarifs == 1 && $nbComptesSansActivite == 0}
                     {input
                          type="checkbox"
                          name="tarifs[]"
diff --git a/www/admin/index.php b/www/admin/index.php
index 225e2b2..2426c07 100644
--- a/www/admin/index.php
+++ b/www/admin/index.php
@@ -61,6 +61,7 @@ $tpl->assign('lesTarifs', $_SESSION['lesTarifs']);
 $tpl->assign('lesActivites', $_SESSION['lesActivites']);
 $tpl->assign('activitesTarifsComptes', $activitesTarifsComptes);
 $tpl->assign('comptesSansActivite', $comptesSansActivite);
+$tpl->assign('nbComptesSansActivite',count($comptesSansActivite));
 $tpl->assign('nbTarifs', count($activitesTarifsComptes));
 $tpl->assign('nbComptes', count($_SESSION['comptes']));
 $tpl->assign('plugin_config', $plugin->getConfig());