diff --git a/drivers/mfd/ipaq-micro.c b/drivers/mfd/ipaq-micro.c
index 4b757d847282..5146a6eb0e5a 100644
--- a/drivers/mfd/ipaq-micro.c
+++ b/drivers/mfd/ipaq-micro.c
@@ -221,7 +221,7 @@ static void ipaq_micro_eeprom_read(struct ipaq_micro *micro,
 
 static char *ipaq_micro_str(u8 *wchar, u8 len)
 {
-	char retstr[256];
+	char retstr[256] = { 0 };
 	u8 i;
 
 	for (i = 0; i < len / 2; i++)