diff --git a/src/include/storage/s_lock.h b/src/include/storage/s_lock.h
index 7609cdffe2..374c0f260f 100644
--- a/src/include/storage/s_lock.h
+++ b/src/include/storage/s_lock.h
@@ -63,7 +63,7 @@
  * Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- *	  $Id: s_lock.h,v 1.99 2002/06/20 20:29:52 momjian Exp $
+ *	  $Id: s_lock.h,v 1.100 2002/09/02 04:42:52 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -439,7 +439,8 @@ extern slock_t wc_tas(volatile slock_t *lock);
  *
  * Note that slock_t on POWER/POWER2/PowerPC is int instead of char
  */
-#define TAS(lock)	cs((int *) (lock), 0, 1)
+#define TAS(lock)			_check_lock(lock, 0, 1)
+#define S_UNLOCK(lock)		_clear_lock(lock, 0)
 #endif	 /* _AIX */