diff --git a/scripts/backup b/scripts/backup
index e40fc73..30f2c81 100755
--- a/scripts/backup
+++ b/scripts/backup
@@ -29,9 +29,6 @@ ynh_backup --src_path="/etc/nginx/conf.d/$domain.d/$app.conf"
 
 ynh_backup --src_path="/etc/php/$phpversion/fpm/pool.d/$app.conf"
 
-#=================================================
-# BACKUP THE MYSQL DATABASE
-#=================================================
 #=================================================
 # BACKUP THE MYSQL DATABASE
 #=================================================
diff --git a/scripts/install b/scripts/install
index d830cb7..4dc5cd0 100755
--- a/scripts/install
+++ b/scripts/install
@@ -13,9 +13,6 @@ source /usr/share/yunohost/helpers
 # INITIALIZE AND STORE SETTINGS
 #=================================================
 
-database="mysql"
-ynh_app_setting_set --app="$app" --key=database --value="$database"
-
 random_key=$(ynh_string_random --length=32)
 ynh_app_setting_set --app="$app" --key=random_key --value="$random_key"
 
diff --git a/scripts/restore b/scripts/restore
index ff226f6..7dfd110 100755
--- a/scripts/restore
+++ b/scripts/restore
@@ -27,10 +27,9 @@ setfacl -R -m g:"www-data":rwX -m u:"$app":rwX "$install_dir/var/"
 #=================================================
 # RESTORE THE MYSQL DATABASE
 #=================================================
-if [ "$database" = "mysql" ]; then
-    ynh_script_progression --message="Restoring the MySQL database..." --weight=1
-    ynh_mysql_connect_as --user="$db_user" --password="$db_pwd" --database="$db_name" < ./db.sql
-fi
+ynh_script_progression --message="Restoring the MySQL database..." --weight=1
+
+ynh_mysql_connect_as --user="$db_user" --password="$db_pwd" --database="$db_name" < ./db.sql
 
 #=================================================
 # RESTORE SYSTEM CONFIGURATIONS
diff --git a/scripts/upgrade b/scripts/upgrade
index 8d41640..98fa655 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -14,15 +14,6 @@ source /usr/share/yunohost/helpers
 #=================================================
 ynh_script_progression --message="Ensuring downward compatibility..." --weight=1
 
-if [ "$database" == "sqlite" ]; then
-    ynh_script_progression --message="Sqlite is not supported by Kimai2 anymore..."
-    ynh_script_progression --message="Kimai2 will be upgraded to last available version : 1.13"
-    if ynh_compare_current_package_version --comparison ge --version 1.17.1~ynh1; then
-        ynh_script_progression --message="Kimai2 sqlite version is already to the last available version, no upgrade will be made"
-        ynh_die  --message="" 0
-    fi
-fi
-
 if [ -z "${registration:-}" ]; then
     registration=0
     ynh_app_setting_set --app="$app" --key=registration --value="$registration"