diff --git a/src/cuirass/remote-server.scm b/src/cuirass/remote-server.scm
index 6003033d59aa5b9fff9c530303ef1ab966e2f2da..882286ba9a17d2d6ee964c6db98b57c4c011d252 100644
--- a/src/cuirass/remote-server.scm
+++ b/src/cuirass/remote-server.scm
@@ -305,6 +305,7 @@ directory."
   (match (zmq-read-message message)
     (('build-succeeded ('drv drv) ('url url) _ ...)
      (let ((outputs (build-outputs drv)))
+       (log-message "fetching '~a' from ~a" drv url)
        (add-to-store outputs url)
        (when (%trigger-substitute-url)
          (trigger-substitutes-baking outputs (%trigger-substitute-url)))