diff --git a/src/pretix/api/webhooks.py b/src/pretix/api/webhooks.py
index e8b42c972c..0c68ac96f8 100644
--- a/src/pretix/api/webhooks.py
+++ b/src/pretix/api/webhooks.py
@@ -309,11 +309,11 @@ def register_default_webhook_events(sender, **kwargs):
         ),
         ParametrizedEventWebhookEvent(
             'pretix.event.testmode.activated',
-            _('Testmode of shop has been activated'),
+            _('Test-Mode of shop has been activated'),
         ),
         ParametrizedEventWebhookEvent(
             'pretix.event.testmode.deactivated',
-            _('Testmode of shop has been deactivated'),
+            _('Test-Mode of shop has been deactivated'),
         ),
     )