diff --git a/include/E57Simple.h b/include/E57Simple.h
index 6686523..5751921 100644
--- a/include/E57Simple.h
+++ b/include/E57Simple.h
@@ -57,6 +57,10 @@
 #include "E57Foundation.h"
 #endif
 
+#ifdef WIN32
+#include <windows.h>
+#endif
+
 using namespace std;
 using namespace boost;