diff --git a/check_process b/check_process
index 3d54604..4fa4ee6 100644
--- a/check_process
+++ b/check_process
@@ -3,10 +3,9 @@
 
 # Move this file from check_process.default to check_process when you have filled it.
 
-;; Test complet sans postgresql
+;; Test complet
 	; Manifest
 		domain="domain.tld"	(DOMAIN)
-		use_postgresql=0
 		pvp=1
 		servername="packagecheck"
 		creative=0
@@ -26,46 +25,11 @@
 		multi_instance=0
 		incorrect_path=0
 		port_already_use=1
-		change_url=0
-
-;; Test complet avec postgresql
-	; Manifest
-		domain="domain.tld"	(DOMAIN)
-		use_postgresql=1
-		pvp=1
-		servername="packagecheck"
-		creative=0
-		damage=1
-		is_public=0	(PUBLIC|public=1|private=0)
-		password="pass"
-		port="30000"	(PORT)
-	; Checks
-		pkg_linter=1
-		setup_sub_dir=0
-		setup_root=0
-		setup_nourl=1
-		setup_private=0
-		setup_public=0
-		upgrade=1
-		backup_restore=1
-		multi_instance=0
-		incorrect_path=0
-		port_already_use=1
-		change_url=0
+		change_url=1
 
 ;;; Levels
-	Level 1=auto
-	Level 2=auto
-	Level 3=auto
-# Level 4: If the app supports LDAP and SSOwat, turn level 4 to '1' and add a link to an issue or a part of your code to show it.
-# If the app does not use LDAP nor SSOwat, and can't use them, turn level 4 to 'na' and explain as well.
-	Level 4=0
+	# If the level 5 (Package linter) is forced to 1. Please add justifications here.
 	Level 5=auto
-	Level 6=auto
-	Level 7=auto
-	Level 8=0
-	Level 9=0
-	Level 10=0
 ;;; Options
 Email=
 Notification=none
diff --git a/scripts/_common.sh b/scripts/_common.sh
index 0d5f16b..2aa7841 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -6,7 +6,7 @@
 #=================================================
 
 # dependencies used by the app
-pkg_dependencies="postgresql postgresql9.6 postgresql-contrib build-essential libirrlicht-dev cmake libbz2-dev libpng-dev libjpeg-dev libxxf86vm-dev libgl1-mesa-dev libsqlite3-dev libogg-dev libvorbis-dev libopenal-dev libcurl4-gnutls-dev libfreetype6-dev zlib1g-dev libgmp-dev libjsoncpp-dev libluajit-5.1-dev"
+pkg_dependencies="build-essential libirrlicht-dev cmake libbz2-dev libpng-dev libjpeg-dev libxxf86vm-dev libgl1-mesa-dev libsqlite3-dev libogg-dev libvorbis-dev libopenal-dev libcurl4-gnutls-dev libfreetype6-dev zlib1g-dev libgmp-dev libjsoncpp-dev libluajit-5.1-dev"
 
 #=================================================
 # PERSONAL HELPERS
diff --git a/scripts/backup b/scripts/backup
index a736e01..4b6445f 100755
--- a/scripts/backup
+++ b/scripts/backup
@@ -26,8 +26,6 @@ app=$YNH_APP_INSTANCE_NAME
 
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)
 domain=$(ynh_app_setting_get --app=$app --key=domain)
-db_name=$(ynh_app_setting_get --app=$app --key=db_name)
-postgresql=$(ynh_app_setting_get --app=$app --key=postgresql)
 
 #=================================================
 # STANDARD BACKUP STEPS
@@ -48,17 +46,6 @@ ynh_print_info --message="Backing up Minetest data..."
 
 ynh_backup --src_path="/home/yunohost.app/$app"
 
-
-#=================================================
-# BACKUP THE POSTGRESQL DATABASE
-#=================================================
-if [ $postgresql -eq 1 ]
-then
-ynh_print_info --message="Backing up the PostgreSQL database..."
-
-ynh_psql_dump_db --database="$db_name" > db.sql
-fi
-
 #=================================================
 # SPECIFIC BACKUP
 #=================================================
diff --git a/scripts/install b/scripts/install
index 5c565f3..37d0376 100755
--- a/scripts/install
+++ b/scripts/install
@@ -22,7 +22,6 @@ ynh_abort_if_errors
 
 domain=$YNH_APP_ARG_DOMAIN
 is_public=$YNH_APP_ARG_IS_PUBLIC
-use_postgresql=$YNH_APP_ARG_USE_POSTGRESQL
 pvp=$YNH_APP_ARG_PVP
 creative=$YNH_APP_ARG_CREATIVE
 damage=$YNH_APP_ARG_DAMAGE
@@ -60,7 +59,6 @@ ynh_print_info --message="Storing installation settings..."
 
 ynh_app_setting_set --app=$app --key=domain --value=$domain
 ynh_app_setting_set --app=$app --key=is_public --value=$is_public
-ynh_app_setting_set --app=$app --key=use_postgresql --value=$use_postgresql
 ynh_app_setting_set --app=$app --key=pvp --value=$pvp
 ynh_app_setting_set --app=$app --key=creative --value=$creative
 ynh_app_setting_set --app=$app --key=damage --value=$damage
@@ -98,23 +96,6 @@ ynh_print_info --message="Installing dependencies..."
 ###		- And the section "UPGRADE DEPENDENCIES" in the upgrade script
 
 ynh_install_app_dependencies $pkg_dependencies
-#=================================================
-# CREATE A POSTGRESQL DATABASE
-#=================================================
-if [ $use_postgresql -eq 1 ]
-then
-ynh_print_info --message="Creating a PostgreSQL database..."
-
-# Create a database, an user and its password. Then store the password in the app's config
-#
-# After executing this helper, the password of the created database will be available in $db_pwd
-# It will also be stored as "psqlpwd" into the app settings.
-
-ynh_psql_test_if_first_run
-db_name=$(ynh_sanitize_dbid $app)
-ynh_app_setting_set --app=$app --key=db_name --value=$db_name
-ynh_psql_setup_db --db_user=$db_name --db_name=$db_name
-fi
 
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE
@@ -178,12 +159,8 @@ ynh_add_systemd_config
 cd /opt/yunohost/$app
 # Download Minetest Game
 git clone --depth 1 https://github.com/minetest/minetest_game.git games/minetest_game -b stable-5
-if [ $use_postgresql -eq 1 ]
-then
-cmake . -DRUN_IN_PLACE=TRUE -DENABLE_POSTGRESQL=TRUE -DPostgreSQL_TYPE_INCLUDE_DIR=/usr/include/postgresql/ -DENABLE_LUAJIT=TRUE -DBUILD_CLIENT=FALSE -DBUILD_SERVER=TRUE
-else
+
 cmake . -DRUN_IN_PLACE=TRUE -DENABLE_LUAJIT=TRUE -DBUILD_CLIENT=FALSE -DBUILD_SERVER=TRUE
-fi
 
 make -j$(nproc)
 
@@ -220,13 +197,6 @@ fi
 chown -R minetest:minetest /var/log/minetest
 
 systemctl start minetest
-if [ $use_postgresql -eq 1 ]
-then
-systemctl stop minetest
-echo "pgsql_connection = host=127.0.0.1 user=$db_user password=$db_pwd dbname=$db_name" > $home_path/.minetest/worlds/world/world.mt
-sleep 5
-/opt/yunohost/$app/bin/minetestserver --migrate postgresql --world $home_path/.minetest/worlds/world
-fi
 
 #=================================================
 # STORE THE CONFIG FILE CHECKSUM
diff --git a/scripts/remove b/scripts/remove
index cf239de..2ddd271 100755
--- a/scripts/remove
+++ b/scripts/remove
@@ -18,10 +18,7 @@ app=$YNH_APP_INSTANCE_NAME
 
 domain=$(ynh_app_setting_get --app=$app --key=domain)
 port=$(ynh_app_setting_get --app=$app --key=port)
-db_name=$(ynh_app_setting_get --app=$app --key=db_name)
-db_user=$db_name
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)
-use_postgresql=$(ynh_app_setting_get --app=$app --key=use_postgresql)
 
 #=================================================
 # STANDARD REMOVE
@@ -44,17 +41,6 @@ ynh_print_info --message="Stopping and removing the systemd service"
 # Remove the dedicated systemd config
 ynh_remove_systemd_config
 
-#=================================================
-# REMOVE THE POSTGRESQL DATABASE
-#=================================================
-if [ $use_postgresql -eq 1 ]
-then
-ynh_print_info --message="Removing the PostgreSQL database"
-
-# Remove a database if it exists, along with the associated user
-ynh_psql_remove_db --user=$db_user --db=$db_name
-fi
-
 #=================================================
 # REMOVE DEPENDENCIES
 #=================================================
diff --git a/scripts/restore b/scripts/restore
index a83c87b..d2b3cc4 100755
--- a/scripts/restore
+++ b/scripts/restore
@@ -27,8 +27,6 @@ app=$YNH_APP_INSTANCE_NAME
 domain=$(ynh_app_setting_get --app=$app --key=domain)
 path_url=$(ynh_app_setting_get --app=$app --key=path)
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)
-db_name=$(ynh_app_setting_get --app=$app --key=db_name)
-postgresql=$(ynh_app_setting_get --app=$app --key=postgresql)
 home_path=$(ynh_app_setting_get --app=$app --key=home_path)
 
 #=================================================
@@ -81,19 +79,6 @@ ynh_print_info --message="Reinstalling dependencies..."
 # Define and install dependencies
 ynh_install_app_dependencies $pkg_dependencies
 
-#=================================================
-# RESTORE THE POSTGRESQL DATABASE
-#=================================================
-if [ $postgresql -eq 1 ]
-then
-ynh_print_info --message="Restoring the PostgreSQL database..."
-
-ynh_psql_test_if_first_run
-db_pwd=$(ynh_app_setting_get --app=$app --key=psqlpwd)
-ynh_psql_setup_db --db_user=$db_name --db_name=$db_name --db_pwd=$db_pwd
-ynh_psql_connect_as --user=$db_name --password=$db_pwd --database=$db_name < ./db.sql
-fi
-
 #=================================================
 # RESTORE SYSTEMD
 #=================================================
diff --git a/scripts/upgrade b/scripts/upgrade
index 68847d6..f87799e 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -19,8 +19,6 @@ app=$YNH_APP_INSTANCE_NAME
 domain=$(ynh_app_setting_get --app=$app --key=domain)
 is_public=$(ynh_app_setting_get --app=$app --key=is_public)
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)
-use_postgresql=$(ynh_app_setting_get --app=$app --key=use_postgresql)
-db_name=$(ynh_app_setting_get --app=$app --key=db_name)
 
 #=================================================
 # ENSURE DOWNWARD COMPATIBILITY
@@ -36,12 +34,6 @@ elif [ "$is_public" = "No" ]; then
 	is_public=0
 fi
 
-# If db_name doesn't exist, create it
-if [ -z $db_name ]; then
-	db_name=$(ynh_sanitize_dbid --db_name=$app)
-	ynh_app_setting_set --app=$app --key=db_name --value=$db_name
-fi
-
 # If final_path doesn't exist, create it
 if [ -z $final_path ]; then
 	final_path=/var/www/$app
@@ -115,14 +107,10 @@ ynh_add_systemd_config
 cd /opt/yunohost/$app
 # Download Minetest Game
 git clone --depth 1 https://github.com/minetest/minetest_game.git games/minetest_game -b stable-5
-if [ $use_postgresql -eq 1 ]
-then
-cmake . -DRUN_IN_PLACE=TRUE -DENABLE_POSTGRESQL=TRUE -DPostgreSQL_TYPE_INCLUDE_DIR=/usr/include/postgresql/ -DENABLE_LUAJIT=TRUE -DBUILD_CLIENT=FALSE -DBUILD_SERVER=TRUE
-else
-cmake . -DRUN_IN_PLACE=TRUE -DENABLE_LUAJIT=TRUE -DBUILD_CLIENT=FALSE -DBUILD_SERVER=TRUE
-fi
 
-make -j 2
+cmake . -DRUN_IN_PLACE=TRUE -DENABLE_LUAJIT=TRUE -DBUILD_CLIENT=FALSE -DBUILD_SERVER=TRUE
+
+make -j$(nproc)
 
 ### Verify the checksum of a file, stored by `ynh_store_file_checksum` in the install script.
 ### And create a backup of this file if the checksum is different. So the file will be backed up if the admin had modified it.
@@ -150,11 +138,11 @@ ynh_use_logrotate --non-append
 chown -R root: $final_path
 
 #=================================================
-# RELOAD NGINX
+# RELOAD MINETEST
 #=================================================
-ynh_print_info --message="Reloading nginx web server..."
+ynh_print_info --message="Restarting Minetest..."
 
-systemctl reload nginx
+systemctl restart minetest
 
 #=================================================
 # END OF SCRIPT