diff --git a/rootfs/usr/local/bin/startup b/rootfs/usr/local/bin/startup
index f6698d3..72e669a 100644
--- a/rootfs/usr/local/bin/startup
+++ b/rootfs/usr/local/bin/startup
@@ -15,6 +15,7 @@ fi
 sed -i "s/<FLARUM_PORT>/${FLARUM_PORT}/g" /etc/nginx/nginx.conf
 sed -i "s/<UPLOAD_MAX_SIZE>/${UPLOAD_MAX_SIZE}/g" /etc/nginx/nginx.conf /etc/php7/php-fpm.conf
 sed -i "s/<PHP_MEMORY_LIMIT>/${PHP_MEMORY_LIMIT}/g" /etc/php7/php-fpm.conf
+sed -i 's/memory_limit = .*/memory_limit = ${PHP_MEMORY_LIMIT}/' /etc/php7/php.ini
 sed -i "s/<OPCACHE_MEMORY_LIMIT>/${OPCACHE_MEMORY_LIMIT}/g" /etc/php7/conf.d/00_opcache.ini
 
 # Set permissions for /flarum folder