diff --git a/18.0/apache/config/redis.config.php b/18.0/apache/config/redis.config.php
index 9429c901..a5fde3c7 100644
--- a/18.0/apache/config/redis.config.php
+++ b/18.0/apache/config/redis.config.php
@@ -1,11 +1,11 @@
 <?php
 if (getenv('REDIS_HOST')) {
-  $CONFIG = array (
+  $CONFIG = array(
     'memcache.distributed' => '\OC\Memcache\Redis',
     'memcache.locking' => '\OC\Memcache\Redis',
     'redis' => array(
       'host' => getenv('REDIS_HOST'),
-      'password' => getenv('REDIS_HOST_PASSWORD'),
+      'password' => (string) getenv('REDIS_HOST_PASSWORD'),
     ),
   );
 
diff --git a/18.0/fpm-alpine/config/redis.config.php b/18.0/fpm-alpine/config/redis.config.php
index 9429c901..a5fde3c7 100644
--- a/18.0/fpm-alpine/config/redis.config.php
+++ b/18.0/fpm-alpine/config/redis.config.php
@@ -1,11 +1,11 @@
 <?php
 if (getenv('REDIS_HOST')) {
-  $CONFIG = array (
+  $CONFIG = array(
     'memcache.distributed' => '\OC\Memcache\Redis',
     'memcache.locking' => '\OC\Memcache\Redis',
     'redis' => array(
       'host' => getenv('REDIS_HOST'),
-      'password' => getenv('REDIS_HOST_PASSWORD'),
+      'password' => (string) getenv('REDIS_HOST_PASSWORD'),
     ),
   );
 
diff --git a/18.0/fpm/config/redis.config.php b/18.0/fpm/config/redis.config.php
index 9429c901..a5fde3c7 100644
--- a/18.0/fpm/config/redis.config.php
+++ b/18.0/fpm/config/redis.config.php
@@ -1,11 +1,11 @@
 <?php
 if (getenv('REDIS_HOST')) {
-  $CONFIG = array (
+  $CONFIG = array(
     'memcache.distributed' => '\OC\Memcache\Redis',
     'memcache.locking' => '\OC\Memcache\Redis',
     'redis' => array(
       'host' => getenv('REDIS_HOST'),
-      'password' => getenv('REDIS_HOST_PASSWORD'),
+      'password' => (string) getenv('REDIS_HOST_PASSWORD'),
     ),
   );
 
diff --git a/19.0/apache/config/redis.config.php b/19.0/apache/config/redis.config.php
index 9429c901..a5fde3c7 100644
--- a/19.0/apache/config/redis.config.php
+++ b/19.0/apache/config/redis.config.php
@@ -1,11 +1,11 @@
 <?php
 if (getenv('REDIS_HOST')) {
-  $CONFIG = array (
+  $CONFIG = array(
     'memcache.distributed' => '\OC\Memcache\Redis',
     'memcache.locking' => '\OC\Memcache\Redis',
     'redis' => array(
       'host' => getenv('REDIS_HOST'),
-      'password' => getenv('REDIS_HOST_PASSWORD'),
+      'password' => (string) getenv('REDIS_HOST_PASSWORD'),
     ),
   );
 
diff --git a/19.0/fpm-alpine/config/redis.config.php b/19.0/fpm-alpine/config/redis.config.php
index 9429c901..a5fde3c7 100644
--- a/19.0/fpm-alpine/config/redis.config.php
+++ b/19.0/fpm-alpine/config/redis.config.php
@@ -1,11 +1,11 @@
 <?php
 if (getenv('REDIS_HOST')) {
-  $CONFIG = array (
+  $CONFIG = array(
     'memcache.distributed' => '\OC\Memcache\Redis',
     'memcache.locking' => '\OC\Memcache\Redis',
     'redis' => array(
       'host' => getenv('REDIS_HOST'),
-      'password' => getenv('REDIS_HOST_PASSWORD'),
+      'password' => (string) getenv('REDIS_HOST_PASSWORD'),
     ),
   );
 
diff --git a/19.0/fpm/config/redis.config.php b/19.0/fpm/config/redis.config.php
index 9429c901..a5fde3c7 100644
--- a/19.0/fpm/config/redis.config.php
+++ b/19.0/fpm/config/redis.config.php
@@ -1,11 +1,11 @@
 <?php
 if (getenv('REDIS_HOST')) {
-  $CONFIG = array (
+  $CONFIG = array(
     'memcache.distributed' => '\OC\Memcache\Redis',
     'memcache.locking' => '\OC\Memcache\Redis',
     'redis' => array(
       'host' => getenv('REDIS_HOST'),
-      'password' => getenv('REDIS_HOST_PASSWORD'),
+      'password' => (string) getenv('REDIS_HOST_PASSWORD'),
     ),
   );
 
diff --git a/20.0/apache/config/redis.config.php b/20.0/apache/config/redis.config.php
index 9429c901..a5fde3c7 100644
--- a/20.0/apache/config/redis.config.php
+++ b/20.0/apache/config/redis.config.php
@@ -1,11 +1,11 @@
 <?php
 if (getenv('REDIS_HOST')) {
-  $CONFIG = array (
+  $CONFIG = array(
     'memcache.distributed' => '\OC\Memcache\Redis',
     'memcache.locking' => '\OC\Memcache\Redis',
     'redis' => array(
       'host' => getenv('REDIS_HOST'),
-      'password' => getenv('REDIS_HOST_PASSWORD'),
+      'password' => (string) getenv('REDIS_HOST_PASSWORD'),
     ),
   );
 
diff --git a/20.0/fpm-alpine/config/redis.config.php b/20.0/fpm-alpine/config/redis.config.php
index 9429c901..a5fde3c7 100644
--- a/20.0/fpm-alpine/config/redis.config.php
+++ b/20.0/fpm-alpine/config/redis.config.php
@@ -1,11 +1,11 @@
 <?php
 if (getenv('REDIS_HOST')) {
-  $CONFIG = array (
+  $CONFIG = array(
     'memcache.distributed' => '\OC\Memcache\Redis',
     'memcache.locking' => '\OC\Memcache\Redis',
     'redis' => array(
       'host' => getenv('REDIS_HOST'),
-      'password' => getenv('REDIS_HOST_PASSWORD'),
+      'password' => (string) getenv('REDIS_HOST_PASSWORD'),
     ),
   );
 
diff --git a/20.0/fpm/config/redis.config.php b/20.0/fpm/config/redis.config.php
index 9429c901..a5fde3c7 100644
--- a/20.0/fpm/config/redis.config.php
+++ b/20.0/fpm/config/redis.config.php
@@ -1,11 +1,11 @@
 <?php
 if (getenv('REDIS_HOST')) {
-  $CONFIG = array (
+  $CONFIG = array(
     'memcache.distributed' => '\OC\Memcache\Redis',
     'memcache.locking' => '\OC\Memcache\Redis',
     'redis' => array(
       'host' => getenv('REDIS_HOST'),
-      'password' => getenv('REDIS_HOST_PASSWORD'),
+      'password' => (string) getenv('REDIS_HOST_PASSWORD'),
     ),
   );