--- a/evutil.c
+++ b/evutil.c
@@ -37,9 +37,6 @@
 #include <io.h>
 #include <tchar.h>
 #include <process.h>
-#undef _WIN32_WINNT
-/* For structs needed by GetAdaptersAddresses */
-#define _WIN32_WINNT 0x0501
 #include <iphlpapi.h>
 #include <netioapi.h>
 #endif
