diff --git a/drivers/amlogic/media/vout/hdmitx/hdmi_tx_20/hdmi_tx_main.c b/drivers/amlogic/media/vout/hdmitx/hdmi_tx_20/hdmi_tx_main.c
index 022d573a0a3a..2f4a9dcfa6a1 100644
--- a/drivers/amlogic/media/vout/hdmitx/hdmi_tx_20/hdmi_tx_main.c
+++ b/drivers/amlogic/media/vout/hdmitx/hdmi_tx_20/hdmi_tx_main.c
@@ -4744,7 +4744,7 @@ static char *next_token_ex(char *separator, char *buf, unsigned int size,
 /* check the colorattribute from uboot */
 static void check_hdmiuboot_attr(char *token)
 {
-	char attr[16];
+	char attr[16] = {0};
 	const char * const cs[] = {
 		"444", "422", "rgb", "420", NULL};
 	const char * const cd[] = {