diff --git a/guix-data-service/web/revision/controller.scm b/guix-data-service/web/revision/controller.scm
index 5aeed49..14a721a 100644
--- a/guix-data-service/web/revision/controller.scm
+++ b/guix-data-service/web/revision/controller.scm
@@ -1146,7 +1146,8 @@
                                                    `((target . ,target))
                                                    '())
                                              (builds . ,builds))))
-                                        derivations))))))
+                                        derivations))))
+                #:stream? #t))
               (else
                (letpar& ((systems
                           (call-with-resource-from-pool (connection-pool)