diff --git a/Demo/MB91460_Softune/SRC/serial/serial.c b/Demo/MB91460_Softune/SRC/serial/serial.c
index 72d60e173..3e7726009 100644
--- a/Demo/MB91460_Softune/SRC/serial/serial.c
+++ b/Demo/MB91460_Softune/SRC/serial/serial.c
@@ -201,7 +201,7 @@ signed portBASE_TYPE xReturn;
 __interrupt void UART2_TxISR (void)
 {
 	signed portCHAR cChar;
-	signed portBASE_TYPE xTaskWoken;
+	signed portBASE_TYPE xTaskWoken = pdFALSE;
 
 	/* The previous character has been transmitted.  See if there are any
 	further characters waiting transmission. */