diff --git a/account_manager/models.py b/account_manager/models.py
index 68eeb26..72e82c1 100644
--- a/account_manager/models.py
+++ b/account_manager/models.py
@@ -11,6 +11,7 @@ from core.tokens import account_activation_token
 from django.core.mail import EmailMessage
 from django.contrib.auth.models import User
 from django.contrib.auth.tokens import default_token_generator
+from core.settings import PASSWORD_RESET_TIMEOUT_DAYS
 import re
 
 
@@ -53,7 +54,8 @@ class LdapUser(Model):
             'uid': urlsafe_base64_encode(force_bytes(user.pk)).decode(),
             'token': default_token_generator.make_token(user=user),
             'protocol': protocol,
-            'email': email
+            'email': email,
+            'expiration_days': PASSWORD_RESET_TIMEOUT_DAYS
         })
         email = EmailMessage(
             mail_subject, message, to=[user.email]
diff --git a/templates/registration/welcome_email.jinja2 b/templates/registration/welcome_email.jinja2
index b6f79f5..ac866a1 100644
--- a/templates/registration/welcome_email.jinja2
+++ b/templates/registration/welcome_email.jinja2
@@ -5,4 +5,5 @@
 <p>Um deinen Account zu aktivieren</p>
 <p>Über den folgenden Link kannst du deinen Account
     aktivieren: {{ protocol }}://{{ domain }}{{ url('ldap_password_reset_confirm', kwargs={'uidb64':uid, 'token':token}) }}</p>
+<p>Der Link ist nur {{ expiration_days }} Tage gültig!</p>