diff --git a/ennstatus/status/functions.py b/ennstatus/status/functions.py
--- a/ennstatus/status/functions.py
+++ b/ennstatus/status/functions.py
@@ -23,6 +23,8 @@ def _send_mail(server_name, status, last
         mail.send(msg)
     except KeyError:
         current_app.logger.error('Admin for %s not found!' % server_name)
+    except AssertionError:
+        pass
     except Exception as e:
         current_app.logger.error('Unexpected error: %s' % e,
                                  exc_info=True)