diff --git a/backups/generate_configs.py b/backups/generate_configs.py
index 933da9de..7c58b311 100755
--- a/backups/generate_configs.py
+++ b/backups/generate_configs.py
@@ -34,7 +34,7 @@ if __name__ == "__main__":
             fichier.write("""$Conf{RsyncShareName} = ['%(shares)s'];
 $Conf{BackupFilesExclude} = {
     %(excludes)s
-};""" % {'shares' : ", ".join(backup_folders.keys()), 'excludes' : "\n    ".join(["'%s' => ['lost+found']," % nom for nom in backup_folders.keys()])})
+};""" % {'shares' : "', '".join(backup_folders.keys()), 'excludes' : "\n    ".join(["'%s' => ['lost+found']," % nom for nom in backup_folders.keys()])})
         os.chmod(rootpath + hoteRsync + ".pl", 0644)
         os.chown(rootpath + hoteRsync + ".pl", root, wwwdata)