diff --git a/src/cuirass/base.scm b/src/cuirass/base.scm
index 04ea41644d19be81117cfa60b93ab495ae977712..0c06bf76b3fe8875ad96abfc1fdb48d7bc6dad05 100644
--- a/src/cuirass/base.scm
+++ b/src/cuirass/base.scm
@@ -689,8 +689,9 @@ by PRODUCT-SPECS."
 (define (build-packages store jobs eval-id)
   "Build JOBS and return a list of Build results."
   (define derivations
-    (with-time-logging (format #f "~a registration" eval-id)
-                       (db-register-builds jobs eval-id)))
+    (with-time-logging
+     (format #f "evaluation ~a registration" eval-id)
+     (db-register-builds jobs eval-id)))
 
   (log-message "evaluation ~a registered ~a new derivations"
                eval-id (length derivations))