diff --git a/gnu/system/vm.scm b/gnu/system/vm.scm
@@ -446,6 +450,7 @@ system that is passed to 'populate-root-file-system'."
                                      #:bootloader-installer
                                      #+(bootloader-installer bootloader)))))))
    #:system system
+   #:memory-size 1024
    #:make-disk-image? #t
    #:disk-image-size disk-image-size
    #:disk-image-format disk-image-format