diff --git a/newlib/ChangeLog b/newlib/ChangeLog
index 508f597e1..a9bab35f5 100644
--- a/newlib/ChangeLog
+++ b/newlib/ChangeLog
@@ -1,3 +1,8 @@
+2002-01-23  Thomas Fitzsimmons  <fitzsim@redhat.com>
+
+	* libc/include/sys/signal.h: Remove pthread_kill declaration
+	when __CYGWIN__ is defined.
+
 2002-01-18  Mark Bradshaw  <bradshaw@staff.crosswalk.com>
 
 	* libc/include/time.h: Add prototype for strptime for Cygwin.
diff --git a/newlib/libc/include/sys/signal.h b/newlib/libc/include/sys/signal.h
index e3368bfb1..a13e17b80 100644
--- a/newlib/libc/include/sys/signal.h
+++ b/newlib/libc/include/sys/signal.h
@@ -158,7 +158,7 @@ int _EXFUN(sigpending, (sigset_t *));
 int _EXFUN(sigsuspend, (const sigset_t *));
 int _EXFUN(sigpause, (int));
 
-#if defined(_POSIX_THREADS)
+#if defined(_POSIX_THREADS) && !defined(__CYGWIN__)
 int _EXFUN(pthread_kill, (pthread_t thread, int sig));
 #endif