diff --git a/.config/redis.config.php b/.config/redis.config.php
index e9c7c733..8f4b7ec7 100644
--- a/.config/redis.config.php
+++ b/.config/redis.config.php
@@ -5,7 +5,6 @@ if (getenv('REDIS_HOST')) {
     'memcache.locking' => '\OC\Memcache\Redis',
     'redis' => array(
       'host' => getenv('REDIS_HOST'),
-      'port' => getenv('REDIS_PORT')?: 6379,
     ),
   );
 }
diff --git a/.examples/docker-compose/insecure/mariadb-cron-redis/apache/docker-compose.yml b/.examples/docker-compose/insecure/mariadb-cron-redis/apache/docker-compose.yml
index 64c0570f..97c69299 100644
--- a/.examples/docker-compose/insecure/mariadb-cron-redis/apache/docker-compose.yml
+++ b/.examples/docker-compose/insecure/mariadb-cron-redis/apache/docker-compose.yml
@@ -25,6 +25,7 @@ services:
       - nextcloud:/var/www/html
     environment:
       - MYSQL_HOST=db
+      - REDIS_HOST=redis
     env_file:
       - db.env
     depends_on:
diff --git a/.examples/docker-compose/insecure/mariadb-cron-redis/fpm/docker-compose.yml b/.examples/docker-compose/insecure/mariadb-cron-redis/fpm/docker-compose.yml
index 424ef057..b48e54f1 100644
--- a/.examples/docker-compose/insecure/mariadb-cron-redis/fpm/docker-compose.yml
+++ b/.examples/docker-compose/insecure/mariadb-cron-redis/fpm/docker-compose.yml
@@ -23,6 +23,7 @@ services:
       - nextcloud:/var/www/html
     environment:
       - MYSQL_HOST=db
+      - REDIS_HOST=redis
     env_file:
       - db.env
     depends_on:
diff --git a/.examples/docker-compose/with-nginx-proxy/mariadb-cron-redis/apache/docker-compose.yml b/.examples/docker-compose/with-nginx-proxy/mariadb-cron-redis/apache/docker-compose.yml
index aaec5a2e..2c3f125e 100644
--- a/.examples/docker-compose/with-nginx-proxy/mariadb-cron-redis/apache/docker-compose.yml
+++ b/.examples/docker-compose/with-nginx-proxy/mariadb-cron-redis/apache/docker-compose.yml
@@ -26,6 +26,7 @@ services:
       - LETSENCRYPT_HOST=
       - LETSENCRYPT_EMAIL=
       - MYSQL_HOST=db
+      - REDIS_HOST=redis
     env_file:
       - db.env
     depends_on:
diff --git a/.examples/docker-compose/with-nginx-proxy/mariadb-cron-redis/fpm/docker-compose.yml b/.examples/docker-compose/with-nginx-proxy/mariadb-cron-redis/fpm/docker-compose.yml
index 30aee4d9..fd2e5fc1 100644
--- a/.examples/docker-compose/with-nginx-proxy/mariadb-cron-redis/fpm/docker-compose.yml
+++ b/.examples/docker-compose/with-nginx-proxy/mariadb-cron-redis/fpm/docker-compose.yml
@@ -23,6 +23,7 @@ services:
       - nextcloud:/var/www/html
     environment:
       - MYSQL_HOST=db
+      - REDIS_HOST=redis 
     env_file:
       - db.env
     depends_on:
diff --git a/13.0/apache/config/redis.config.php b/13.0/apache/config/redis.config.php
index d300dd0a..8f4b7ec7 100644
--- a/13.0/apache/config/redis.config.php
+++ b/13.0/apache/config/redis.config.php
@@ -5,7 +5,6 @@ if (getenv('REDIS_HOST')) {
     'memcache.locking' => '\OC\Memcache\Redis',
     'redis' => array(
       'host' => getenv('REDIS_HOST'),
-      'port' => getenv('REDIS_PORT') ?: 6379,
     ),
   );
 }
diff --git a/13.0/fpm-alpine/config/redis.config.php b/13.0/fpm-alpine/config/redis.config.php
index d300dd0a..8f4b7ec7 100644
--- a/13.0/fpm-alpine/config/redis.config.php
+++ b/13.0/fpm-alpine/config/redis.config.php
@@ -5,7 +5,6 @@ if (getenv('REDIS_HOST')) {
     'memcache.locking' => '\OC\Memcache\Redis',
     'redis' => array(
       'host' => getenv('REDIS_HOST'),
-      'port' => getenv('REDIS_PORT') ?: 6379,
     ),
   );
 }
diff --git a/13.0/fpm/config/redis.config.php b/13.0/fpm/config/redis.config.php
index d300dd0a..8f4b7ec7 100644
--- a/13.0/fpm/config/redis.config.php
+++ b/13.0/fpm/config/redis.config.php
@@ -5,7 +5,6 @@ if (getenv('REDIS_HOST')) {
     'memcache.locking' => '\OC\Memcache\Redis',
     'redis' => array(
       'host' => getenv('REDIS_HOST'),
-      'port' => getenv('REDIS_PORT') ?: 6379,
     ),
   );
 }
diff --git a/14.0/apache/config/redis.config.php b/14.0/apache/config/redis.config.php
index d300dd0a..8f4b7ec7 100644
--- a/14.0/apache/config/redis.config.php
+++ b/14.0/apache/config/redis.config.php
@@ -5,7 +5,6 @@ if (getenv('REDIS_HOST')) {
     'memcache.locking' => '\OC\Memcache\Redis',
     'redis' => array(
       'host' => getenv('REDIS_HOST'),
-      'port' => getenv('REDIS_PORT') ?: 6379,
     ),
   );
 }
diff --git a/14.0/fpm-alpine/config/redis.config.php b/14.0/fpm-alpine/config/redis.config.php
index d300dd0a..8f4b7ec7 100644
--- a/14.0/fpm-alpine/config/redis.config.php
+++ b/14.0/fpm-alpine/config/redis.config.php
@@ -5,7 +5,6 @@ if (getenv('REDIS_HOST')) {
     'memcache.locking' => '\OC\Memcache\Redis',
     'redis' => array(
       'host' => getenv('REDIS_HOST'),
-      'port' => getenv('REDIS_PORT') ?: 6379,
     ),
   );
 }
diff --git a/14.0/fpm/config/redis.config.php b/14.0/fpm/config/redis.config.php
index d300dd0a..8f4b7ec7 100644
--- a/14.0/fpm/config/redis.config.php
+++ b/14.0/fpm/config/redis.config.php
@@ -5,7 +5,6 @@ if (getenv('REDIS_HOST')) {
     'memcache.locking' => '\OC\Memcache\Redis',
     'redis' => array(
       'host' => getenv('REDIS_HOST'),
-      'port' => getenv('REDIS_PORT') ?: 6379,
     ),
   );
 }
diff --git a/15.0/apache/config/redis.config.php b/15.0/apache/config/redis.config.php
index d300dd0a..8f4b7ec7 100644
--- a/15.0/apache/config/redis.config.php
+++ b/15.0/apache/config/redis.config.php
@@ -5,7 +5,6 @@ if (getenv('REDIS_HOST')) {
     'memcache.locking' => '\OC\Memcache\Redis',
     'redis' => array(
       'host' => getenv('REDIS_HOST'),
-      'port' => getenv('REDIS_PORT') ?: 6379,
     ),
   );
 }
diff --git a/15.0/fpm-alpine/config/redis.config.php b/15.0/fpm-alpine/config/redis.config.php
index d300dd0a..8f4b7ec7 100644
--- a/15.0/fpm-alpine/config/redis.config.php
+++ b/15.0/fpm-alpine/config/redis.config.php
@@ -5,7 +5,6 @@ if (getenv('REDIS_HOST')) {
     'memcache.locking' => '\OC\Memcache\Redis',
     'redis' => array(
       'host' => getenv('REDIS_HOST'),
-      'port' => getenv('REDIS_PORT') ?: 6379,
     ),
   );
 }
diff --git a/15.0/fpm/config/redis.config.php b/15.0/fpm/config/redis.config.php
index d300dd0a..8f4b7ec7 100644
--- a/15.0/fpm/config/redis.config.php
+++ b/15.0/fpm/config/redis.config.php
@@ -5,7 +5,6 @@ if (getenv('REDIS_HOST')) {
     'memcache.locking' => '\OC\Memcache\Redis',
     'redis' => array(
       'host' => getenv('REDIS_HOST'),
-      'port' => getenv('REDIS_PORT') ?: 6379,
     ),
   );
 }
diff --git a/README.md b/README.md
index 06189890..740db13f 100644
--- a/README.md
+++ b/README.md
@@ -133,8 +133,8 @@ The install and update script is only triggered when a default command is used (
 If you want to use Redis you have to create a seperate [Redis](https://hub.docker.com/_/redis/) container in your setup / in your docker-compose file. To inform Nextcloud about the Redis container add:
 
 - 'REDIS_HOST' (not set by default) Name of Redis container
-- 'REDIS_PORT' (optional, default:_6379_) Port number of Redis container. Use only if you use a non-standard port.
 
+The use of Redis is recommended to prevent file locking problems. See the examples for further instructions.
 
 # Running this image with docker-compose
 The easiest way to get a fully featured and functional setup is using a `docker-compose` file. There are too many different possibilities to setup your system, so here are only some examples what you have to look for.