diff --git a/src/open_inwoner/conf/base.py b/src/open_inwoner/conf/base.py
index 9db8e4d6b2..ef2dad8c88 100644
--- a/src/open_inwoner/conf/base.py
+++ b/src/open_inwoner/conf/base.py
@@ -499,7 +499,7 @@
 ADMIN_SESSION_COOKIE_AGE = config(
     "ADMIN_SESSION_COOKIE_AGE", 3600
 )  # Default 1 hour max session duration for admins
-SESSION_WARN_DELTA = 60  # Warn 1 minute before end of session.
+SESSION_WARN_DELTA = 120  # Warn 2 minutes before end of session.
 SESSION_COOKIE_AGE = 900  # Set to 15 minutes or less for testing
 
 LOGIN_REDIRECT_URL = "/"