diff --git a/index.php b/index.php
index eae8073..de725b6 100644
--- a/index.php
+++ b/index.php
@@ -36,7 +36,7 @@ $pollService = new PollService($connect, new $logService());
 /* ---- */
 
 $demoPoll = $pollService->findById('aqg259dth55iuhwm');
-$nbcol = $config['show_what_is_that'] + $config['show_the_software'] + $config['show_cultivate_your_garden'];
+$nbcol = max( $config['show_what_is_that'] + $config['show_the_software'] + $config['show_cultivate_your_garden'], 1 );
 
 $smarty->assign('show_what_is_that', $config['show_what_is_that']);
 $smarty->assign('show_the_software', $config['show_the_software']);