diff --git a/Internet/DHCP6/dhcpv6.h b/Internet/DHCP6/dhcpv6.h
index c97d2ba..6a375f5 100644
--- a/Internet/DHCP6/dhcpv6.h
+++ b/Internet/DHCP6/dhcpv6.h
@@ -42,7 +42,7 @@
 #ifndef _DHCP6_H_
 #define _DHCP6_H_
 #include <stdint.h>
-#include "W6100.h"
+#include "w6100.h"
 #include "socket.h"
 /*
  * @brief