diff --git a/zlib-clib/zlib-clib.cabal b/zlib-clib/zlib-clib.cabal
index 6312ce8..61e067c 100644
--- a/zlib-clib/zlib-clib.cabal
+++ b/zlib-clib/zlib-clib.cabal
@@ -36,7 +36,6 @@ library
   default-language: Haskell2010
 
   include-dirs: cbits
-  includes: zlib.h
 
   c-sources: cbits/adler32.c
              cbits/compress.c
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