diff --git a/gnu/services/vpn.scm b/gnu/services/vpn.scm
index 1acd7dd588..2ba9e238fb 100644
--- a/gnu/services/vpn.scm
+++ b/gnu/services/vpn.scm
@@ -92,6 +92,8 @@
             wireguard-configuration-table
             wireguard-configuration-auto-start?
 
+            wireguard-configuration-file
+
             wireguard-service-type))
 
 ;;;