diff --git a/guix/scripts/build.scm b/guix/scripts/build.scm
index 68402fda18e5c002ec7ccfaebd27e7683ea54c44..ba47b1232d411a42a43018c206d6c4ab68d669c5 100644
--- a/guix/scripts/build.scm
+++ b/guix/scripts/build.scm
@@ -51,7 +51,8 @@ (define-module (guix scripts build)
             options->transformation
             show-transformation-options-help
 
-            guix-build))
+            guix-build
+            register-root))
 
 (define %default-log-urls
   ;; Default base URLs for build logs.