diff --git a/gnu/services/virtualization.scm b/gnu/services/virtualization.scm
index 8b480e1bd3e..cb6227403be 100644
--- a/gnu/services/virtualization.scm
+++ b/gnu/services/virtualization.scm
@@ -965,6 +965,7 @@ that will be listening to receive secret keys on port 1004, TCP."
                          (generate-host-keys? #f)))
              (guix-service-type
               config => (guix-configuration
+                         (inherit config)
                          (generate-substitute-key? #f))))))))