diff --git a/env.sample b/env.sample
index 49badda2..2c7b4c87 100644
--- a/env.sample
+++ b/env.sample
@@ -14,3 +14,5 @@ CACHE_REDIS_URL='redis://localhost:6379/1'
 BOUNCE_HOST=''
 BOUNCE_USERNAME=''
 BOUNCE_PASSWORD=''
+
+FLASK_APP=pyfedi.py