diff --git a/guix-data-service/jobs/load-new-guix-revision.scm b/guix-data-service/jobs/load-new-guix-revision.scm
index e92dba7..07610e3 100644
--- a/guix-data-service/jobs/load-new-guix-revision.scm
+++ b/guix-data-service/jobs/load-new-guix-revision.scm
@@ -2242,9 +2242,7 @@ WHERE builder != 'builtin:download'
 
     (unless derivation-file-name-for-current-system
       (raise-exception
-       (make-exception-with-message
-        (simple-format #f "Failed to generate store item for ~A\n"
-                       commit))))
+       (make-exception-with-message "failed to generate store item")))
 
     (let ((derivation-for-current-system
            (read-derivation-from-file derivation-file-name-for-current-system)))