diff --git a/demo/dio.c b/demo/dio.c
index 81f8bf7..1587073 100644
--- a/demo/dio.c
+++ b/demo/dio.c
@@ -30,7 +30,6 @@ int main(int argc, char *argv[])
 {
 	int ret;
 	int stype;
-	int i;
 
 	parse_options(argc,argv);