diff --git a/13_irq/imx6uirqApp.c b/13_irq/imx6uirqApp.c
index b133659486a1ee6c038f5ad494cbdfa46326a334..dfcb2e4db0b5de0259ceb3e6aa268b9912c58713 100644
--- a/13_irq/imx6uirqApp.c
+++ b/13_irq/imx6uirqApp.c
@@ -30,7 +30,6 @@ int main(int argc, char *argv[])
 	int ret = 0;
 	int data = 0;
 	char *filename;
-	unsigned char data;
 	
 	if (argc != 2) {
 		printf("Error Usage!\r\n");