diff --git a/bsp/mini2440/lcd.h b/bsp/mini2440/lcd.h
index aef7d2f62..d668225e3 100644
--- a/bsp/mini2440/lcd.h
+++ b/bsp/mini2440/lcd.h
@@ -16,6 +16,6 @@
 
 #include <rtthread.h>
 
-void rt_hw_lcd_init();
+void rt_hw_lcd_init(void);
 
 #endif