diff --git a/branches/follower/wiz810mj/src/demo/WizDemo4/WizDemo4.pde b/branches/follower/wiz810mj/src/demo/WizDemo4/WizDemo4.pde
index 7c20cf6..1fda9c9 100644
--- a/branches/follower/wiz810mj/src/demo/WizDemo4/WizDemo4.pde
+++ b/branches/follower/wiz810mj/src/demo/WizDemo4/WizDemo4.pde
@@ -39,6 +39,7 @@
 #include <WIZ810MJ.h>
 
 
+/* --------- SPI --------- */
 
 // Define SPI-related pins
 #define PIN_DATA_OUT 11 // MOSI (Master Out / Slave In)
@@ -46,6 +47,17 @@
 #define PIN_SPI_CLOCK  13 // SCK (Serial Clock) 
 #define PIN_SLAVE_SELECT 10 // SS (Slave Select)
 
+class SPI {
+  
+  public:
+    static void begin(void);
+};
+
+void SPI::begin(void) {
+}
+
+/* ----------------------- */
+
 // #define PIN_RESET 9 // WIZnet module /RESET
 
 #define PIN_RESET 8 // WIZnet module /RESET