diff --git a/MobileGL/Includes.h b/MobileGL/Includes.h
index 398f4214..4cdab56a 100644
--- a/MobileGL/Includes.h
+++ b/MobileGL/Includes.h
@@ -69,6 +69,7 @@
 #include <dlfcn.h>
 #include <unistd.h>
 #elif defined(_WIN32)
+#define WIN32_LEAN_AND_MEAN
 #include <windows.h>
 #include <processthreadsapi.h>
 #else