diff --git a/templates/base.html b/templates/base.html
index d23a86d..187aea1 100644
--- a/templates/base.html
+++ b/templates/base.html
@@ -40,7 +40,7 @@
 
 	<nav class="navbar navbar-expand-lg navbar-light bg-light justify-content-between py-1">
 	<div class="container-fluid">
-		{% if config.ENV == "production" %}
+		{% if config.FLASK_ENV == "production" %}
             <a class="navbar-brand" href="/">Books DB</a>
         {% else %}
             <a class="navbar-brand bg-secondary text-white px-2 py-0" style="border-radius:4px" href="/">Books (DEV)</a>