1 files changed, 6 insertions, 1 deletions
diff --git a/src/winmain.cpp b/src/winmain.cpp
index 607660740..5120e44e0 100644
--- a/src/winmain.cpp
+++ b/src/winmain.cpp
@@ -11,7 +11,12 @@
 #include <stdio.h>
 #include <io.h>
 #include <conio.h>
-#define _WIN32_WINNT 0x0501
+
+#if !defined(_WIN32_WINNT) || (_WIN32_WINNT < 0x0501)
+# undef _WIN32_WINNT 
+# define _WIN32_WINNT 0x0501
+#endif
+
 #include <windows.h>
 
 extern int main (int argc, char **argv);