diff --git a/operating-systems/buer.scm b/operating-systems/buer.scm
index bf9ccae..a09208c 100644
--- a/operating-systems/buer.scm
+++ b/operating-systems/buer.scm
@@ -113,7 +113,7 @@
            %default-kernel-arguments))
 
    (file-systems
-     (append %tmpfs-file-systems))
+     (append file-system:%tmpfs-file-systems))
 
    (users
     (cons* user:radio