diff --git a/bsp/mini2440/touch.c b/bsp/mini2440/touch.c
index 85179a5137..2d4be231aa 100644
--- a/bsp/mini2440/touch.c
+++ b/bsp/mini2440/touch.c
@@ -83,7 +83,7 @@ struct s3c2410ts
 
 	char phys[32];
 };
-static struct s3c2410ts ts = RT_NULL;
+static struct s3c2410ts ts;
 
 struct rtgui_touch_device
 {