diff --git a/zlib/zlib.cabal b/zlib/zlib.cabal
index b230b76..73b03e9 100644
--- a/zlib/zlib.cabal
+++ b/zlib/zlib.cabal
@@ -92,8 +92,6 @@ library
     build-tools:     hsc2hs < 0.68.5
     -- GHC 7 ships hsc2hs-0.67
 
-  -- use `includes:` to include them when compiling
-  includes:        zlib.h hs-zlib.h
   include-dirs:    cbits-extra
   c-sources:       cbits-extra/hs-zlib.c
   ghc-options:     -Wall -fwarn-tabs