diff --git a/system/base-system.scm b/system/base-system.scm
index 252c7b7..71e6366 100644
--- a/system/base-system.scm
+++ b/system/base-system.scm
@@ -194,11 +194,11 @@
           (symlink (string-append #$zsh "/bin/zsh") "/bin/zsh"))))
 
 (define (metznet-etc-service configuration)
-  (("guix/channels.scm" ,())
-   ("openvpn/ta.key" ,(local-file "ta.key"))
-   ("openvpn/ca.crt" ,(local-file "ca.crt"))
-   ("openvpn/client.crt" ,(local-file "client.crt"))
-   ("openvpn/client.key" ,(local-file "client.key"))))
+  `(("guix/channels.scm" ,(metznet-system-configuration-channels-file configuration))
+    ("openvpn/ta.key" ,(local-file "ta.key"))
+    ("openvpn/ca.crt" ,(local-file "ca.crt"))
+    ("openvpn/client.crt" ,(local-file "client.crt"))
+    ("openvpn/client.key" ,(local-file "client.key"))))
 
 (define metznet-service-type
   (service-type (name 'metznet-service)