diff --git a/src/Data/Binary.hs b/src/Data/Binary.hs
index ac936674a..ec5104a2e 100644
--- a/src/Data/Binary.hs
+++ b/src/Data/Binary.hs
@@ -56,6 +56,8 @@ module Data.Binary (
 
     ) where
 
+#include "MachDeps.h"
+
 import Data.Word
 
 import Data.Binary.Put