diff --git a/htdocs/opensurvey/class/opensurveysondage.class.php b/htdocs/opensurvey/class/opensurveysondage.class.php
index 83902f8c678..9d7462e87b6 100644
--- a/htdocs/opensurvey/class/opensurveysondage.class.php
+++ b/htdocs/opensurvey/class/opensurveysondage.class.php
@@ -168,7 +168,7 @@ class Opensurveysondage extends CommonObject
         $sql .= " ".$this->db->escape($this->allow_comments).",";
         $sql .= " ".$this->db->escape($this->allow_spy).",";
         $sql .= " '".$this->db->escape($this->sujet)."',";
-        $sql .= " '".$conf->entity."',";
+        $sql .= " ".$conf->entity;
         $sql .= ")";
 
         $this->db->begin();