diff --git a/test/command/5986.md b/test/command/5986.md
index dd426a416..e24aebb64 100644
--- a/test/command/5986.md
+++ b/test/command/5986.md
@@ -1,5 +1,5 @@
 ```
-% pandoc -t epub --number-sections --toc --metadata title=Foo | pandoc -f epub -t html
+% pandoc -t epub --number-sections --toc --metadata title=Foo -o - | pandoc -f epub -t html
 # Hi
 ^D
 <p><span id="title_page.xhtml"></span></p>