diff --git a/AK/Time.cpp b/AK/Time.cpp
index a31952bd005..0525eb9c36f 100644
--- a/AK/Time.cpp
+++ b/AK/Time.cpp
@@ -15,6 +15,7 @@
 #    include <AK/Windows.h>
 #    define localtime_r(time, tm) localtime_s(tm, time)
 #    define gmtime_r(time, tm) gmtime_s(tm, time)
+#    define tzname _tzname
 #endif
 
 namespace AK {