diff --git a/font_game/web.py b/font_game/web.py
index 38d4ddc..905bc9d 100644
--- a/font_game/web.py
+++ b/font_game/web.py
@@ -10,8 +10,7 @@ app = flask.Flask(
     template_folder="../templates"
 )
 
-@app.before_first_request
-def activate():
+with app.app_context():
     purge_images()
     purge_games()