diff --git a/include/ssp/ssp.h b/include/ssp/ssp.h
--- a/include/ssp/ssp.h
+++ b/include/ssp/ssp.h
@@ -87,6 +87,7 @@
 #define __ssp_redirect0(rtype, fun, args, call) \
     __ssp_redirect_raw(rtype, fun, fun, args, call, 1, __ssp_bos0, __len)
 
+#include <sys/_types.h>
 #include <machine/_limits.h>
 
 __ssp_inline int