diff --git a/.travis.yml b/.travis.yml
index 3ddfb27..52f2d3b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -22,5 +22,5 @@ install:
 
 script:
   - emacs --version
-  - cask build
   - cask exec ert-runner
+  - cask build
diff --git a/test/test-helper.el b/test/test-helper.el
index 9ec9dae..dee0a94 100644
--- a/test/test-helper.el
+++ b/test/test-helper.el
@@ -38,4 +38,7 @@
   (set-text-properties 0 (length txt) nil txt)
   txt)
 
+(defun font-info (&rest _)
+  "Mock `font-info'.")
+
 ;;; test-helper.el ends here