diff --git a/man/hostnamectl.xml b/man/hostnamectl.xml
index 07cb0bc005..8ac18349c6 100644
--- a/man/hostnamectl.xml
+++ b/man/hostnamectl.xml
@@ -101,7 +101,7 @@
icon name to NAME. The icon name is used by some
graphical applications to visualize this host. The icon name
should follow the Icon
+ url="https://specifications.freedesktop.org/icon-naming/latest">Icon
Naming Specification.