diff --git a/gnu/system/vm.scm b/gnu/system/vm.scm
index 33604d3229..a95f615e6b 100644
--- a/gnu/system/vm.scm
+++ b/gnu/system/vm.scm
@@ -72,7 +72,15 @@ (define-module (gnu system vm)
             system-qemu-image/shared-store-script
 
             virtual-machine
-            virtual-machine?))
+            virtual-machine?
+            virtual-machine-operating-system
+            virtual-machine-qemu
+            virtual-machine-volatile?
+            virtual-machine-graphic?
+            virtual-machine-memory-size
+            virtual-machine-disk-image-size
+            virtual-machine-port-forwardings
+            virtual-machine-date))
 
 
 ;;; Commentary: