diff --git a/fftools/cmdutils.c b/fftools/cmdutils.c
index 9cfbc45..e3447e6 100644
--- a/fftools/cmdutils.c
+++ b/fftools/cmdutils.c
@@ -63,6 +63,8 @@
 #include <sys/resource.h>
 #endif
 #ifdef _WIN32
+#define _WIN32_WINNT 0x0502
+#define WIN32_LEAN_AND_MEAN
 #include <windows.h>
 #endif