diff --git a/htdocs/opensurvey/fonctions.php b/htdocs/opensurvey/fonctions.php
index bbd2a4788175b611dc0b8bab6d6a4002e93afc63..d3f1069babb19a5f00c4e15ba5d6631e320d193d 100644
--- a/htdocs/opensurvey/fonctions.php
+++ b/htdocs/opensurvey/fonctions.php
@@ -298,6 +298,10 @@ function ajouter_sondage($origin)
 	unset($_SESSION["mailsonde"]);
 	unset($_SESSION['allow_comments']);
 	unset($_SESSION['allow_spy']);
+	unset($_SESSION['toutchoix']);
+	unset($_SESSION['caneditsondage']);
+	unset($_SESSION['totalchoixjour']);
+	unset($_SESSION['champdatefin']);
 
 	header("Location: ".$urlback);
 	exit();