diff --git a/README.md b/README.md
index f28c56b..69a1d67 100644
--- a/README.md
+++ b/README.md
@@ -138,10 +138,11 @@ docker-compose up -d
 
 :warning: Disable 3rd party extensions prior to upgrading in panel admin.
 
-Add install.txt file in assets folder
+Add installed.txt file in assets folder
+
 ```
 touch /mnt/docker/flarum/assets/installed.txt
-chown $UID: /mnt/docker/flarum/assets/installed.txt
+chown $UID:$GID /mnt/docker/flarum/assets/installed.txt
 ```
 
 Remove old assets
diff --git a/rootfs/usr/local/bin/extension b/rootfs/usr/local/bin/extension
index fbead8b..37ecd20 100644
--- a/rootfs/usr/local/bin/extension
+++ b/rootfs/usr/local/bin/extension
@@ -8,6 +8,8 @@ CEND="${CSI}0m"
 CRED="${CSI}1;31m"
 CGREEN="${CSI}1;32m"
 
+cd /flarum/app
+
 # Composer cache dir and packages list paths
 CACHE_DIR=/flarum/app/extensions/.cache
 LIST_FILE=/flarum/app/extensions/list
diff --git a/rootfs/usr/local/bin/run.sh b/rootfs/usr/local/bin/run.sh
index 055a170..1b00ca0 100644
--- a/rootfs/usr/local/bin/run.sh
+++ b/rootfs/usr/local/bin/run.sh
@@ -36,6 +36,8 @@ if [ "$LOG_TO_STDOUT" = true ]; then
   sed -i "s/.*error_log.*$/error_log = \/dev\/stdout/" /etc/php7/php-fpm.conf
 fi
 
+cd /flarum/app
+
 # Custom repositories (eg. for privates extensions)
 if [ -f '/flarum/app/extensions/composer.repositories.txt' ]; then
   while read line; do