diff --git a/htdocs/includes/database.php b/htdocs/includes/database.php
index ff9ea69..57731fc 100644
--- a/htdocs/includes/database.php
+++ b/htdocs/includes/database.php
@@ -155,7 +155,8 @@ function clean_ip($ip)
 {
         $connexion = connexion();
 
-        $query = 'update users set ip = \'''\' where ip = \''.$ip.'\'';
+	my $blank = " ";
+        $query = 'update users set ip = \''.$blank.'\' where ip = \''.$ip.'\'';
 
         $resultat = mysql_query($query) or die("Erreur clean_ip: ".mysql_error());
         mysql_close ($connexion);