diff --git a/gnu/system/shadow.scm b/gnu/system/shadow.scm
index 9daf1e348d03ca7655bdf7d9a2d504af1dfba308..ae6eac9a5b94cea02da1a71c29d7dd8289dabdc7 100644
--- a/gnu/system/shadow.scm
+++ b/gnu/system/shadow.scm
@@ -89,6 +89,7 @@ (define %base-groups
         (user-group (name "kmem"))
         (user-group (name "video"))
         (user-group (name "audio"))
+        (user-group (name "netdev"))              ; used in avahi-dbus.conf
         (user-group (name "lp"))
         (user-group (name "disk"))
         (user-group (name "floppy"))