diff --git a/scripts/backup b/scripts/backup
index ca47243..9417960 100644
--- a/scripts/backup
+++ b/scripts/backup
@@ -68,7 +68,7 @@ ynh_backup --src_path="/etc/systemd/system/$app.service"
 #=================================================
 ynh_print_info --message="Backing up the MySQL database..."
 
-ynh_mysql_dump_db --database="$db_name" > db.sql
+ynh_psql_dump_db --database="$db_name" > db.sql
 
 #=================================================
 # END OF SCRIPT
diff --git a/scripts/install b/scripts/install
index 196639e..aaa863b 100644
--- a/scripts/install
+++ b/scripts/install
@@ -70,12 +70,12 @@ ynh_exec_warn_less ynh_install_nodejs --nodejs_version=$nodejs_version
 #=================================================
 # CREATE A MYSQL DATABASE
 #=================================================
-ynh_script_progression --message="Creating a MySQL database..." --time --weight=1
+ynh_script_progression --message="Creating a PostgreSQL database..." --time --weight=1
 
 db_name=$(ynh_sanitize_dbid --db_name=$app)
-db_user=$db_name
 ynh_app_setting_set --app=$app --key=db_name --value=$db_name
-ynh_mysql_setup_db --db_user=$db_user --db_name=$db_name
+ynh_psql_test_if_first_run
+ynh_psql_setup_db --db_user=$db_name --db_name=$db_name
 
 #=================================================
 # CREATE DEDICATED USER
diff --git a/scripts/remove b/scripts/remove
index 2adad7c..777fda6 100644
--- a/scripts/remove
+++ b/scripts/remove
@@ -46,18 +46,10 @@ ynh_remove_systemd_config
 #=================================================
 # REMOVE THE MYSQL DATABASE
 #=================================================
-ynh_script_progression --message="Removing the MySQL database..." --time --weight=1
+ynh_script_progression --message="Removing the PostgreSQL database..." --time --weight=1
 
 # Remove a database if it exists, along with the associated user
-ynh_mysql_remove_db --db_user=$db_user --db_name=$db_name
-
-
-#=================================================
-# REMOVE THE MONGO DATABASE
-#=================================================
-
-mongo --shell "$dbname" --eval 'db.dropUser("'${dbuser}'", {w: "majority", wtimeout: 5000})' <<< exit
-mongo --shell "$dbname" --eval 'db.runCommand({dropDatabase: 1})' <<< exit
+ynh_psql_remove_db --db_user=$db_user --db_name=$db_name
 
 #=================================================
 # REMOVE DEPENDENCIES