diff --git a/include/chaiscript/language/chaiscript_engine.hpp b/include/chaiscript/language/chaiscript_engine.hpp
index a7d3bad..8d97aaa 100644
--- a/include/chaiscript/language/chaiscript_engine.hpp
+++ b/include/chaiscript/language/chaiscript_engine.hpp
@@ -37,7 +37,7 @@
 #ifdef CHAISCRIPT_WINDOWS
 #define VC_EXTRA_LEAN
 #define WIN32_LEAN_AND_MEAN
-#include <Windows.h>
+#include <windows.h>
 #endif
 #endif