diff --git a/src/systembus/systembus_psuart.c b/src/systembus/systembus_psuart.c
index 5c3f4a6..f65082c 100644
--- a/src/systembus/systembus_psuart.c
+++ b/src/systembus/systembus_psuart.c
@@ -96,6 +96,10 @@ int SysbusPSUart_Init(SYSBUS_PSUART **instPtr, const SYSBUS_PSUART_CONFIG *confi
 	if (NULL == (*instPtr)->hwConfig) {
 		return FAILURE;
 	}
+	(*instPtr)->currTxMsg = 0;
+	(*instPtr)->currRxMsg = 0;
+	(*instPtr)->txCnt = 0;
+	(*instPtr)->rxCnt = 0;
 	(*instPtr)->txDone = false;
 	(*instPtr)->rxDone = false;