diff --git a/models.py b/models.py
index 7190695..b89d305 100644
--- a/models.py
+++ b/models.py
@@ -5,7 +5,7 @@
 
 database_url = os.getenv('DATABASE_URL')
 if not database_url:
-    raise RuntimeError('Please set BOT_TOKEN environment variable')
+    raise RuntimeError('Please set DATABASE_URL environment variable')
 db = connect(database_url)