diff --git a/tags/calendar--contacts---caldav-or-carddav-servers.yml b/tags/calendar--contacts---caldav-or-carddav-servers.yml
index 0e1ccff740..13df00c80d 100644
--- a/tags/calendar--contacts---caldav-or-carddav-servers.yml
+++ b/tags/calendar--contacts---caldav-or-carddav-servers.yml
@@ -1,7 +1,4 @@
 name: Calendar & Contacts
 description: '[CalDAV](https://en.wikipedia.org/wiki/CalDAV) and [CardDAV](https://en.wikipedia.org/wiki/CardDAV) protocol servers and web clients/interfaces for [Electronic calendar](https://en.wikipedia.org/wiki/Calendaring_software), [address book](https://en.wikipedia.org/wiki/Address_book) and [contact management](https://en.wikipedia.org/wiki/Contact_manager).'
-external_links:
-  - title: Comparison of CalDAV and CardDAV implementations - Wikipedia
-    url: https://en.wikipedia.org/wiki/Comparison_of_CalDAV_and_CardDAV_implementations
 related_tags:
   - Groupware