diff --git a/src/pretix/base/services/vouchers.py b/src/pretix/base/services/vouchers.py
index bbbab6108..d0cbb9d68 100644
--- a/src/pretix/base/services/vouchers.py
+++ b/src/pretix/base/services/vouchers.py
@@ -53,7 +53,7 @@ def vouchers_send(event: Event, vouchers: list, subject: str, message: str, reci
                     v.tag = r.get('tag')
                 if v.comment:
                     v.comment += '\n\n'
-                v.comment = gettext('The voucher has been sent to {recipient}.').format(recipient=r['email'])
+                v.comment += gettext('The voucher has been sent to {recipient}.').format(recipient=r['email'])
                 logs.append(v.log_action(
                     'pretix.voucher.sent',
                     user=user,