diff --git a/app.py b/app.py
index 450b156..206b7ea 100644
--- a/app.py
+++ b/app.py
@@ -254,6 +254,9 @@ def inject_has_authorized_cookie():
 def require_system_password():
     if request.endpoint is None:
         return
+ 
+    if request.endpoint in ['forbidden', 'not_found', 'internal_error', 'system_auth']:
+        return
     
     if 'authorized' not in request.cookies \
        and request.endpoint != 'system_auth' \