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-rw-r--r--sys/netccitt/pk.h6
1 files changed, 5 insertions, 1 deletions
diff --git a/sys/netccitt/pk.h b/sys/netccitt/pk.h
index cd0d34c13389..afccb374d219 100644
--- a/sys/netccitt/pk.h
+++ b/sys/netccitt/pk.h
@@ -36,9 +36,12 @@
* SUCH DAMAGE.
*
* from: @(#)pk.h 7.8 (Berkeley) 4/30/91
- * $Id: pk.h,v 1.2 1993/10/16 19:46:46 rgrimes Exp $
+ * $Id: pk.h,v 1.3 1993/11/07 17:47:25 wollman Exp $
*/
+#ifndef _NETCCITT_PK_H_
+#define _NETCCITT_PK_H_ 1
+
/*
*
* X.25 Packet Level Definitions:
@@ -191,3 +194,4 @@ struct mbuf *pk_template ();
#define DIAG_TYPE 14 * MAXSTATES
#define INVALID_PACKET 15 * MAXSTATES
#define DELETE_PACKET INVALID_PACKET
+#endif /* _NETCCITT_PK_H_ */