diff --git a/gnu/system/vm.scm b/gnu/system/vm.scm
index d282ba557a7..ad5e6b75bbd 100644
--- a/gnu/system/vm.scm
+++ b/gnu/system/vm.scm
@@ -499,7 +499,7 @@ with '-virtfs' options for the host file systems listed in SHARED-FS."
                                                 (mappings '())
                                                 full-boot?
                                                 (disk-image-size
-                                                 (* (if full-boot? 500 30)
+                                                 (* (if full-boot? 500 70)
                                                     (expt 2 20))))
   "Return a derivation that builds a script to run a virtual machine image of
 OS that shares its store with the host.