diff --git a/scripts/backup b/scripts/backup
index 8a35241..6f9007c 100755
--- a/scripts/backup
+++ b/scripts/backup
@@ -6,8 +6,8 @@ set -eu
 app=$YNH_APP_INSTANCE_NAME
 
 # Set app specific variables
-dbname=$app
-dbuser=$app
+dbname=`sudo cat /var/www/$app/config/config.php  |grep dbname|sed "s|.*=> '\(.*\)'.*|\1|g"`
+dbuser=$dbname
 
 # Source app helpers
 source /usr/share/yunohost/helpers
diff --git a/scripts/remove b/scripts/remove
index e7b807c..c5cf494 100755
--- a/scripts/remove
+++ b/scripts/remove
@@ -5,8 +5,8 @@ source ./_common.sh
 
 # Set app specific variables
 app=$APPNAME
-dbname=$app
-dbuser=$app
+dbname=`sudo cat /var/www/$app/config/config.php  |grep dbname|sed "s|.*=> '\(.*\)'.*|\1|g"`
+dbuser=$dbname
 
 # Source app helpers
 source /usr/share/yunohost/helpers
diff --git a/scripts/restore b/scripts/restore
index a88e502..e660c92 100755
--- a/scripts/restore
+++ b/scripts/restore
@@ -5,10 +5,6 @@ set -eu
 # Get multi-instances specific variables
 app=$YNH_APP_INSTANCE_NAME
 
-# Set app specific variables
-dbname=$app
-dbuser=$app
-
 # Source app helpers
 source /usr/share/yunohost/helpers
 
@@ -57,6 +53,10 @@ sudo cp -a ./www "$DESTDIR"
 sudo mkdir -p "$DATADIR"
 sudo cp -a ./data/. "$DATADIR"
 
+# Set app specific variables
+dbname=`sudo cat /var/www/$app/config/config.php  |grep dbname|sed "s|.*=> '\(.*\)'.*|\1|g"`
+dbuser=$dbname
+
 # Create and restore the database
 ynh_mysql_create_db "$dbname" "$dbuser" "$dbpass"
 ynh_mysql_connect_as "$dbuser" "$dbpass" "$dbname" < ./db.sql
diff --git a/scripts/upgrade b/scripts/upgrade
index 526e0ee..adeb7a2 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -5,8 +5,8 @@ source ./_common.sh
 
 # Set app specific variables
 app=$APPNAME
-dbname=$app
-dbuser=$app
+dbname=`sudo cat /var/www/$app/config/config.php  |grep dbname|sed "s|.*=> '\(.*\)'.*|\1|g"`
+dbuser=$dbname
 
 # Backup the current version of the app, restore it if the upgrade fails
 if sudo yunohost backup list | grep -q $app-before-upgrade > /dev/null 2>&1; then	# Supprime l'ancienne archive seulement si elle existe