diff --git a/testing/lisp/test-org-agenda.el b/testing/lisp/test-org-agenda.el
index 95a8074f5..17822272f 100644
--- a/testing/lisp/test-org-agenda.el
+++ b/testing/lisp/test-org-agenda.el
@@ -157,6 +157,7 @@
      (text-scale-set 11)
      (cl-assert (and (boundp text-scale-mode) text-scale-mode))
      (org-agenda-redo)
+     (should text-scale-mode)
      (should (= 11 text-scale-mode-amount)))
    (org-test-agenda--kill-all-agendas)))