diff --git a/inventory-app/main.py b/inventory-app/main.py
index d6bac6d..1d65260 100755
--- a/inventory-app/main.py
+++ b/inventory-app/main.py
@@ -186,7 +186,7 @@ def name_check(form, field):
 @app.route("/login")
 @login_required
 def login_dummy():
-    return redirect(request.args.get("redirect_url", "/m/inventory"))
+    return redirect(request.args.get("redirect_url") or "/m/inventory")
 
 @app.route("/")
 def index():