diff --git a/haddock.cabal b/haddock.cabal
index 1649904920f6f33db44e8d03fa5c5ae5f1bd862c..4814331bafeb60f1dcab3c32c1aa052603d1c38c 100644
--- a/haddock.cabal
+++ b/haddock.cabal
@@ -228,7 +228,10 @@ test-suite spec
     , vendor/attoparsec-0.10.4.0
 
   other-modules:
+      Helper
       Haddock.ParserSpec
+      Haddock.Utf8Spec
+      Haddock.Parser.UtilSpec
 
   build-depends:
       base