diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index 020fa2ea0..cc4916596 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,7 @@
+Thu Jan  4 10:29:54  2001  Earnie Boyd  <earnie_boyd@yahoo.com>
+
+	* thread.cc: Need LONG_MAX definition.
+
 Wed Jan  3 13:47:23 2001  Christopher Faylor <cgf@cygnus.com>
 
 	* thread.cc (MTinterface::CreateSemaphore): Correctly set semaphore
diff --git a/winsup/cygwin/thread.cc b/winsup/cygwin/thread.cc
index a6b914bc1..6bcb07881 100644
--- a/winsup/cygwin/thread.cc
+++ b/winsup/cygwin/thread.cc
@@ -16,6 +16,7 @@ details. */
 
 #ifdef _MT_SAFE
 #include "winsup.h"
+#include <limits.h>
 #include <errno.h>
 #include <assert.h>
 #include <stdlib.h>