diff --git a/compose/gettingstarted.md b/compose/gettingstarted.md
index 9d936790a8..d879c60aa5 100644
--- a/compose/gettingstarted.md
+++ b/compose/gettingstarted.md
@@ -228,7 +228,7 @@ services:
     volumes:
       - .:/code
     environment:
-      FLASK_DEBUG: True
+      FLASK_DEBUG: "true"
   redis:
     image: "redis:alpine"
 ```