diff --git a/ChangeLog b/ChangeLog
index 7de88fd42a..a3664c9434 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,7 @@
 1999-09-14  Ulrich Drepper  <drepper@cygnus.com>
 
+	* db2/mutex/sparc.gcc (TSL_UNSET): Dereference pointer.
+
 	* elf/elf.h (PF_MASKOS): New definition.
 
 1999-08-09  Scott Bambrough  <scottb@netwinder.org>
diff --git a/db2/mutex/sparc.gcc b/db2/mutex/sparc.gcc
index 9e3239b0b0..5eff1764c8 100644
--- a/db2/mutex/sparc.gcc
+++ b/db2/mutex/sparc.gcc
@@ -27,5 +27,5 @@
 	!__r;								\
 })
 
-#define	TSL_UNSET(tsl)	((tsl) = 0)
+#define	TSL_UNSET(tsl)	(*(tsl) = 0)
 #define	TSL_INIT(tsl)	TSL_UNSET(tsl)