diff --git a/htdocs/comm/action/rapport/index.php b/htdocs/comm/action/rapport/index.php
index 44bd8547e8a..908819e1d1a 100644
--- a/htdocs/comm/action/rapport/index.php
+++ b/htdocs/comm/action/rapport/index.php
@@ -38,6 +38,7 @@ $action = GETPOST('action', 'aZ09');
 $month = GETPOST('month', 'int');
 $year = GETPOST('year', 'int');
 
+$optioncss = GETPOST('optioncss', 'alpha');
 $limit = GETPOST('limit', 'int') ?GETPOST('limit', 'int') : $conf->liste_limit;
 $sortfield = GETPOST("sortfield", 'alpha');
 $sortorder = GETPOST("sortorder", 'alpha');