diff --git a/guix-data-service/web/repository/controller.scm b/guix-data-service/web/repository/controller.scm
index 8e8c1bb..060b9fb 100644
--- a/guix-data-service/web/repository/controller.scm
+++ b/guix-data-service/web/repository/controller.scm
@@ -313,7 +313,7 @@
                       (output_consistency ,identity
                                           #:default "any")
                       (system ,parse-system #:default "x86_64-linux")
-                      (target ,parse-target)
+                      (target ,parse-target #:default "")
                       (limit_results  ,parse-result-limit
                                       #:no-default-when (all_results)
                                       #:default 10)
diff --git a/guix-data-service/web/revision/controller.scm b/guix-data-service/web/revision/controller.scm
index 2052089..67369af 100644
--- a/guix-data-service/web/revision/controller.scm
+++ b/guix-data-service/web/revision/controller.scm
@@ -236,7 +236,7 @@
                     (output_consistency ,identity
                                         #:default "any")
                     (system ,parse-system #:default "x86_64-linux")
-                    (target ,parse-target)
+                    (target ,parse-target #:default "")
                     (limit_results  ,parse-result-limit
                                     #:no-default-when (all_results)
                                     #:default 10)