diff --git a/df_datalink_sp/src/systembus/systembus.c b/df_datalink_sp/src/systembus/systembus.c
index 61680c9..a99c4d4 100644
--- a/df_datalink_sp/src/systembus/systembus.c
+++ b/df_datalink_sp/src/systembus/systembus.c
@@ -320,7 +320,7 @@ int32_t SystemBus_HandleCmd(SYSBUS *instPtr)
 			sysbusRsp->data[WD_ST_RET] = (hwStatsPtr->isSpOk && hwStatsPtr->isAntOk) ? ST_RET_OK : ST_RET_ERROR;
 		}
 		// apply status and omit 2 bytes of overhead.
-		memcpy(sysbusRsp->data + WD_SP_PS_VOLT, &(hwStatsPtr->spPlAuxVolt), ST_RET_INFO_LEN);
+		memcpy(sysbusRsp->data + WD_SP_PS_VOLT, &(hwStatsPtr->spPsVolt), ST_RET_INFO_LEN);
 
 		if (CircQueuePush(instPtr->txQueue, (void *)sysbusRsp) == false)
 		{