diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index 20a009c1a..eb72c417b 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,7 @@
+2011-05-02  Yaakov Selkowitz  <yselkowitz@users.sourceforge.net>
+
+	* sysconf.cc (sca): Set _SC_SPIN_LOCKS to _POSIX_SPIN_LOCKS.
+
 2011-05-02  Christopher Faylor  <me.cygwin2011@cgf.cx>
 
 	* dll_init.cc (dll_list::alloc): Reset 'p' in forked process.
diff --git a/winsup/cygwin/sysconf.cc b/winsup/cygwin/sysconf.cc
index 4e14417ae..8d4febaa3 100644
--- a/winsup/cygwin/sysconf.cc
+++ b/winsup/cygwin/sysconf.cc
@@ -172,7 +172,7 @@ static struct
   {cons, {c:RE_DUP_MAX}},		/*  73, _SC_RE_DUP_MAX */
   {cons, {c:_POSIX_SHELL}},		/*  74, _SC_SHELL */
   {cons, {c:-1L}},			/*  75, _SC_SPAWN */
-  {cons, {c:-1L}},			/*  76, _SC_SPIN_LOCKS */
+  {cons, {c:_POSIX_SPIN_LOCKS}},	/*  76, _SC_SPIN_LOCKS */
   {cons, {c:-1L}},			/*  77, _SC_SPORADIC_SERVER */
   {nsup, {c:0}},			/*  78, _SC_SS_REPL_MAX */
   {cons, {c:SYMLOOP_MAX}},		/*  79, _SC_SYMLOOP_MAX */