diff --git a/scripts/upgrade b/scripts/upgrade
index c253736..7bfa620 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -30,7 +30,7 @@ if [ -z "${secret_key:-}" ]; then
 fi
 
 if [ -z "${smtp_host:-}" ]; then
-  user_conf = "$data_dir/data/config.local.user.php"
+  user_conf="$data_dir/data/config.local.user.php"
 	if [ -f $user_conf ]; then
 		smtp_host=$(ynh_read_var_in_file --file=$user_conf --key=SMTP_HOST)
 	else
@@ -155,8 +155,6 @@ if [ ! -f "$data_dir/data/config.local.user.php" ]; then
   chown $app:$app "$data_dir/data/config.local.user.php"
 fi
 
-
-
 if [ ! -d "$data_dir/data/local_addresses" ]; then
   ynh_script_progression --message="Adding a configuration directory..." --weight=5
   mkdir "$data_dir/data/local_addresses"
@@ -167,7 +165,6 @@ else
   chown $app:www-data "$data_dir/data/local_addresses"
 fi
 
-
 if [ -f "$install_dir/data/association.sqlite" ]; then
 	ynh_script_progression --message="Moving db files..." --weight=5
 	mv $install_dir/data/association.*  $data_dir/data/