diff --git a/gf.cabal b/gf.cabal
index 177107a58..2a402d1e7 100644
--- a/gf.cabal
+++ b/gf.cabal
@@ -103,6 +103,7 @@ Library
     PGF.Internal
     PGF.Lexing
     PGF.Utilities
+    PGF.Haskell
   other-modules:
     PGF.Data
     PGF.Macros