diff --git a/docker/entrypoint.sh b/docker/entrypoint.sh
index ad1e4f8..3a8dbe1 100644
--- a/docker/entrypoint.sh
+++ b/docker/entrypoint.sh
@@ -7,7 +7,7 @@ run_as_www_user() {
     su - www-data -c "/usr/local/bin/php /var/www/app/artisan $1"
 }
 
-if ( ! grep -q "^APP_KEY=" ".env" || grep -q "^APP_KEY=$" ".env"); then
+if [[ -z "$APP_KEY" ]]; then
     echo " > The required APP_KEY configuration is missing in your .env file. Copy and paste this key into your .env file. Then restart the container!"
 
     draw_box() {