X-Git-Url: https://git.subgeniuskitty.com/unix-history/.git/blobdiff_plain/beb54af10082dc588132b2c0d32e050028b72c78..78ed81a334dab56aa7a876792a473d67d4359c25:/sys/sys/wait.h

diff --git a/sys/sys/wait.h b/sys/sys/wait.h
index de3a50d6f6..b33f3031ea 100644
--- a/sys/sys/wait.h
+++ b/sys/sys/wait.h
@@ -30,9 +30,13 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *	@(#)wait.h	7.17 (Berkeley) 6/19/91
+ *	from: @(#)wait.h	7.17 (Berkeley) 6/19/91
+ *	$Id$
  */
 
+#ifndef _SYS_WAIT_H_
+#define _SYS_WAIT_H_
+
 /*
  * This file holds definitions relevent to the wait4 system call
  * and the alternate interfaces that use it (wait, wait3, waitpid).
@@ -156,3 +160,4 @@ pid_t	wait4 __P((pid_t, int *, int, struct rusage *));
 #endif
 __END_DECLS
 #endif
+#endif	/* _SYS_WAIT_H_ */