diff --git a/test/doctests.hs b/test/doctests.hs
index eda0263..8bf21ed 100644
--- a/test/doctests.hs
+++ b/test/doctests.hs
@@ -6,5 +6,8 @@ main :: IO ()
 main = doctest [
     "-package"
   , "ghc"
+  , "-idist/build/autogen/"
+  , "-optP-include"
+  , "-optPdist/build/autogen/cabal_macros.h"
   , "Language/Haskell/GhcMod.hs"
   ]