diff --git a/test/chrono-test.cc b/test/chrono-test.cc
index b27710ca5dca..6e77b6190b6c 100644
--- a/test/chrono-test.cc
+++ b/test/chrono-test.cc
@@ -5,7 +5,7 @@
 //
 // For the license information refer to format.h.
 
-#ifdef WIN32
+#ifndef _CRT_SECURE_NO_WARNINGS
 #  define _CRT_SECURE_NO_WARNINGS
 #endif