diff --git a/app/AppKernel.php b/app/AppKernel.php
index 9212be758..a4f2c1d26 100644
--- a/app/AppKernel.php
+++ b/app/AppKernel.php
@@ -94,15 +94,7 @@ class AppKernel extends Kernel
 
     private function loadEnvVarsFromParameters(ContainerBuilder $container)
     {
-        $this->setEnvVarFromParameter($container, 'DATABASE_HOST', 'database_host');
-        $this->setEnvVarFromParameter($container, 'DATABASE_PORT', 'database_port');
-        $this->setEnvVarFromParameter($container, 'DATABASE_NAME', 'database_name');
-        $this->setEnvVarFromParameter($container, 'DATABASE_USER', 'database_user');
-        $this->setEnvVarFromParameter($container, 'DATABASE_PASSWORD', 'database_password');
-        $this->setEnvVarFromParameter($container, 'DATABASE_PATH', 'database_path');
         $this->setEnvVarFromParameter($container, 'DATABASE_TABLE_PREFIX', 'database_table_prefix');
-        $this->setEnvVarFromParameter($container, 'DATABASE_SOCKET', 'database_socket');
-        $this->setEnvVarFromParameter($container, 'DATABASE_CHARSET', 'database_charset');
 
         $this->setEnvVarFromParameter($container, 'DOMAIN_NAME', 'domain_name');
         $this->setEnvVarFromParameter($container, 'SERVER_NAME', 'server_name');
diff --git a/docker/mariadb/env b/docker/mariadb/env
index 8c8a01fd3..3438f93f9 100644
--- a/docker/mariadb/env
+++ b/docker/mariadb/env
@@ -1,9 +1,2 @@
 MYSQL_ROOT_PASSWORD=wallaroot
 MYSQL_DATABASE=wallabag
-DATABASE_DRIVER=pdo_mysql
-DATABASE_HOST=mariadb
-DATABASE_PORT=3306
-DATABASE_NAME=wallabag
-DATABASE_USER=root
-DATABASE_PASSWORD=wallaroot
-DATABASE_CHARSET=utf8mb4
diff --git a/docker/php/env.example b/docker/php/env.example
index 1eff4bcee..70319de03 100644
--- a/docker/php/env.example
+++ b/docker/php/env.example
@@ -1,10 +1,3 @@
-DATABASE_DRIVER=pdo_sqlite
-DATABASE_HOST=127.0.0.1
-DATABASE_PORT=~
-DATABASE_NAME=symfony
-DATABASE_USER=root
-DATABASE_PASSWORD=~
-DATABASE_PATH='"%kernel.project_dir%/data/db/wallabag.sqlite"'
 DOMAIN_NAME=http://localhost:8000
 SECRET=ch4n63m31fy0uc4n
 PHP_SESSION_SAVE_PATH=tcp://redis:6379?database=2
diff --git a/docker/postgres/env b/docker/postgres/env
index 5d9761861..90d2260f7 100644
--- a/docker/postgres/env
+++ b/docker/postgres/env
@@ -1,10 +1,3 @@
 POSTGRES_USER=wallabag
 POSTGRES_PASSWORD=wallapass
 POSTGRES_DB=wallabag
-DATABASE_HOST=postgres
-DATABASE_PORT=5432
-DATABASE_NAME=wallabag
-DATABASE_USER=wallabag
-DATABASE_PASSWORD=wallapass
-DATABASE_DRIVER=pdo_pgsql
-DATABASE_PATH=null