diff --git a/src/s/ms-w32.h b/src/s/ms-w32.h
index 606428b62bb..f3db0c54275 100644
--- a/src/s/ms-w32.h
+++ b/src/s/ms-w32.h
@@ -273,7 +273,7 @@ Boston, MA 02111-1307, USA.  */
 #define HAVE_SHUTDOWN 1
 #define HAVE_STRFTIME 1
 
-#undef  LOCALTIME_CACHE
+#define LOCALTIME_CACHE
 #undef  HAVE_INET_SOCKETS
 
 #undef  HAVE_AIX_SMT_EXP