diff --git a/templates/InvoiceNinja/0/docker-compose.yml b/templates/InvoiceNinja/0/docker-compose.yml
index d732f87..7aa5f47 100644
--- a/templates/InvoiceNinja/0/docker-compose.yml
+++ b/templates/InvoiceNinja/0/docker-compose.yml
@@ -3,7 +3,7 @@ services:
   app:
     image: invoiceninja/invoiceninja
     environment:
-      - APP_ENV:'production'
+      - APP_ENV='production'
       - APP_DEBUG='false'
       - APP_URL='http://localhost:${WEB_PORT}'
       - APP_CIPHER='AES-256-CBC'