diff --git a/datasette/app.py b/datasette/app.py
index dd443af9..254d7872 100644
--- a/datasette/app.py
+++ b/datasette/app.py
@@ -739,7 +739,7 @@ class Datasette:
             **{
                 "actor": request.actor if request else None,
                 "display_actor": display_actor,
-                "show_logout": "ds_actor" in request.cookies,
+                "show_logout": request is not None and "ds_actor" in request.cookies,
                 "app_css_hash": self.app_css_hash(),
                 "zip": zip,
                 "body_scripts": body_scripts,