diff --git a/docs/when.rst b/docs/when.rst
index 17905f7..76ba91a 100644
--- a/docs/when.rst
+++ b/docs/when.rst
@@ -50,7 +50,6 @@ program chosen:
 
 * Such a setup doesn't work at all with smartphones. Vdirsyncer, on the other
   hand, synchronizes with CardDAV/CalDAV servers, which can be accessed with
-  e.g. DAVx⁵_ or the apps by dmfs_.
+  e.g. DAVx⁵_ or other apps bundled with smartphones.
 
 .. _DAVx⁵: https://www.davx5.com/
-.. _dmfs: https://dmfs.org/