diff --git a/includes/ziti/model_support.h b/includes/ziti/model_support.h
index 6356f60b..938ab899 100644
--- a/includes/ziti/model_support.h
+++ b/includes/ziti/model_support.h
@@ -20,8 +20,10 @@
 #include <stdbool.h>
 #include <stddef.h>
 #include <stdlib.h>
+#ifndef _MSC_VER
 #include <sys/time.h>
 #endif
+#endif
 
 #include <string.h>