diff --git a/usr.sbin/amd/include/config.h b/usr.sbin/amd/include/config.h
index 146f6d4d2ab..c5f4382d63f 100644
--- a/usr.sbin/amd/include/config.h
+++ b/usr.sbin/amd/include/config.h
@@ -936,6 +936,7 @@
 /* Define if your processor stores words with the most significant
    byte first (like Motorola and SPARC, unlike Intel and VAX).  */
 /* #undef WORDS_BIGENDIAN */
+#include <sys/types.h>
 #include <machine/endian.h>
 #if BYTE_ORDER == BIG_ENDIAN
 #define WORDS_BIGENDIAN