diff --git a/sys/i386/include/ansi.h b/sys/i386/include/ansi.h
index 964955f3bf8..cf5131992a9 100644
--- a/sys/i386/include/ansi.h
+++ b/sys/i386/include/ansi.h
@@ -31,7 +31,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)ansi.h	8.2 (Berkeley) 1/4/94
- * $Id: ansi.h,v 1.12 1997/02/22 09:33:53 peter Exp $
+ * $Id: ansi.h,v 1.13 1997/05/08 13:45:43 peter Exp $
  */
 
 #ifndef _MACHINE_ANSI_H_
@@ -55,6 +55,9 @@
 #define	_BSD_WCHAR_T_	_BSD_CT_RUNE_T_		/* wchar_t (see below) */
 #define	_BSD_CLOCKID_T_	int
 #define	_BSD_TIMER_T_	int
+#define	_BSD_UINT8_T_	unsigned char
+#define	_BSD_UINT16_T_	unsigned short
+#define	_BSD_UINT32_T_	unsigned int
 
 /*
  * Types which are fundamental to the implementation and must be used
diff --git a/sys/sys/types.h b/sys/sys/types.h
index 767a1bec35f..68dfcaf75cb 100644
--- a/sys/sys/types.h
+++ b/sys/sys/types.h
@@ -36,7 +36,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)types.h	8.6 (Berkeley) 2/19/95
- * $Id: types.h,v 1.21 1997/05/08 13:50:36 peter Exp $
+ * $Id: types.h,v 1.22 1997/12/31 01:22:01 alex Exp $
  */
 
 #ifndef _SYS_TYPES_H_
@@ -124,6 +124,21 @@ typedef	_BSD_TIMER_T_	timer_t;
 #undef	_BSD_TIMER_T_
 #endif
 
+#ifdef	_BSD_UINT8_T_
+typedef	_BSD_UINT8_T_	uint8_t;
+#undef	_BSD_UINT8_T_
+#endif
+
+#ifdef	_BSD_UINT16_T_
+typedef	_BSD_UINT16_T_	uint16_t;
+#undef	_BSD_UINT16_T_
+#endif
+
+#ifdef	_BSD_UINT32_T_
+typedef	_BSD_UINT32_T_	uint32_t;
+#undef	_BSD_UINT32_T_
+#endif
+
 #ifndef _POSIX_SOURCE
 #define	NBBY	8		/* number of bits in a byte */