diff --git a/guix/build/install.scm b/guix/build/install.scm
index ae51ebe48c..d0019300ff 100644
--- a/guix/build/install.scm
+++ b/guix/build/install.scm
@@ -81,8 +81,10 @@ STORE."
     (directory "/var/log")                          ; for dmd
     (directory "/var/guix/gcroots")
     (directory "/var/empty")                        ; for no-login accounts
+    (directory "/var/db")                           ; for dhclient, etc.
     (directory "/var/run")
     (directory "/run")
+    (directory "/mnt")
     (directory "/var/guix/profiles/per-user/root" 0 0)
 
     ;; Link to the initial system generation.