diff --git a/test/chrono-test.cc b/test/chrono-test.cc
index 70ff0a98..6e77b619 100644
--- a/test/chrono-test.cc
+++ b/test/chrono-test.cc
@@ -5,10 +5,8 @@
 //
 // For the license information refer to format.h.
 
-#ifdef WIN32
-#  ifndef _CRT_SECURE_NO_WARNINGS
-#    define _CRT_SECURE_NO_WARNINGS
-#  endif
+#ifndef _CRT_SECURE_NO_WARNINGS
+#  define _CRT_SECURE_NO_WARNINGS
 #endif
 
 #include "fmt/chrono.h"