diff --git a/slirp/slirp.h b/slirp/slirp.h
index 4c3c672ee6..57955a8965 100644
--- a/slirp/slirp.h
+++ b/slirp/slirp.h
@@ -19,10 +19,6 @@ typedef char *caddr_t;
 # endif
 #endif
 
-#ifdef HAVE_SYS_BITYPES_H
-# include <sys/bitypes.h>
-#endif
-
 #ifndef _WIN32
 #include <sys/uio.h>
 #endif
diff --git a/slirp/slirp_config.h b/slirp/slirp_config.h
index 2605c4222b..a205dc8c28 100644
--- a/slirp/slirp_config.h
+++ b/slirp/slirp_config.h
@@ -23,9 +23,6 @@
 #define HAVE_SYS_FILIO_H
 #endif
 
-/* Define if you have sys/bitypes.h */
-#undef HAVE_SYS_BITYPES_H
-
 /* Define if the machine is big endian */
 //#undef HOST_WORDS_BIGENDIAN