diff --git a/pandoc.cabal b/pandoc.cabal
index 6b9e18427..e507ac42f 100644
--- a/pandoc.cabal
+++ b/pandoc.cabal
@@ -416,6 +416,7 @@ Test-Suite test-pandoc
                   Tests.Writers.ConTeXt
                   Tests.Writers.HTML
                   Tests.Writers.Markdown
+                  Tests.Writers.Plain
                   Tests.Writers.AsciiDoc
                   Tests.Writers.LaTeX
   Ghc-Options:  -rtsopts -Wall -fno-warn-unused-do-bind