diff --git a/emacs/.emacs.d/init.el b/emacs/.emacs.d/init.el
index ec036da..42854f0 100644
--- a/emacs/.emacs.d/init.el
+++ b/emacs/.emacs.d/init.el
@@ -97,14 +97,15 @@ This is currently the data directory under the
 `user-emacs-directory'."
   (concat user-emacs-directory "data/" file-name))
 
-(ert-deftest oni:data-location ()
-  "Test that `oni:data-location' returns the correct locations."
-  (should (string= "~/.emacs.d/data/backup-files/"
-                   (oni:data-location "backup-files/")))
-  (should (string= "~/.emacs.d/data/auto-save-files/"
-                   (oni:data-location "auto-save-files/")))
-  (should (string= "~/.emacs.d/data/auto-save-list/.saves-"
-                   (oni:data-location "auto-save-list/.saves-"))))
+(with-eval-after-load 'ert
+  (ert-deftest oni:data-location ()
+    "Test that `oni:data-location' returns the correct locations."
+    (should (string= "~/.emacs.d/data/backup-files/"
+		     (oni:data-location "backup-files/")))
+    (should (string= "~/.emacs.d/data/auto-save-files/"
+		     (oni:data-location "auto-save-files/")))
+    (should (string= "~/.emacs.d/data/auto-save-list/.saves-"
+		     (oni:data-location "auto-save-list/.saves-")))))
 
 ;;;; Backups: