--- src/_fastmath.c
+++ src/_fastmath.c
@@ -30,7 +30,6 @@
 #include <string.h>
 #include "Python.h"
 #include "pycrypto_compat.h"
-#include <longintrepr.h>				/* for conversions */
 #include "config.h"
 #if HAVE_LIBGMP
 # include <gmp.h>