diff --git a/Demo/MSP430X_MSP430F5438_CCS4/Demo_Source/serial.c b/Demo/MSP430X_MSP430F5438_CCS4/Demo_Source/serial.c
index 639a7a32b..93d40a2e0 100644
--- a/Demo/MSP430X_MSP430F5438_CCS4/Demo_Source/serial.c
+++ b/Demo/MSP430X_MSP430F5438_CCS4/Demo_Source/serial.c
@@ -158,7 +158,7 @@ signed portBASE_TYPE xReturn;
 /*-----------------------------------------------------------*/
 
 #pragma vector=USCI_A1_VECTOR
-interrupt void prvUSCI_A0_ISR( void )
+interrupt void prvUSCI_A1_ISR( void )
 {
 signed portCHAR cChar;
 portBASE_TYPE xTaskWoken = pdFALSE;