diff --git a/hydra/milano-guix-1.scm b/hydra/milano-guix-1.scm
index b1bcd2b..da7be51 100644
--- a/hydra/milano-guix-1.scm
+++ b/hydra/milano-guix-1.scm
@@ -61,7 +61,7 @@
   (bootloader
    (bootloader-configuration
     (bootloader grub-bootloader)
-    (target "/dev/sda")
+    (targets '("/dev/sda"))
     (keyboard-layout keyboard-layout)))
 
   (file-systems
@@ -72,7 +72,11 @@
             (type "btrfs"))
           %base-file-systems))
 
-  (swap-devices '("/dev/sda2" "/dev/sdb2"))
+  (swap-devices
+   (list (swap-space
+          (target "/dev/sda2"))
+         (swap-space
+          (target "/dev/sdb2"))))
 
   (host-name "milano-guix-1")