diff --git a/.env_example b/.env_example
index 979f5da73f54aa455593962b72594c907ca0b131..e74e5b7d1f20e79bf4221ff3363e9ce71bfdaf4e 100644
--- a/.env_example
+++ b/.env_example
@@ -1,4 +1,5 @@
 ### Flask ###
+FLASK_CONFIG=production
 # SECRET_KEY=
 
 ### Flask-Mail ###