diff --git a/dep/g3dlite/source/System.cpp b/dep/g3dlite/source/System.cpp
index b2f8cb886d..b841e23c49 100644
--- a/dep/g3dlite/source/System.cpp
+++ b/dep/g3dlite/source/System.cpp
@@ -45,6 +45,7 @@
 #   include <sys/timeb.h>
 #   include "G3D/RegistryUtil.h"
 #include <Ole2.h>
+#include <intrin.h>
 
 #elif defined(G3D_LINUX)