diff --git a/medtronic/src/main/java/info/nightscout/androidaps/plugins/pump/medtronic/data/MedtronicHistoryData.kt b/medtronic/src/main/java/info/nightscout/androidaps/plugins/pump/medtronic/data/MedtronicHistoryData.kt
index 7ea4b694d2..8a866c9516 100644
--- a/medtronic/src/main/java/info/nightscout/androidaps/plugins/pump/medtronic/data/MedtronicHistoryData.kt
+++ b/medtronic/src/main/java/info/nightscout/androidaps/plugins/pump/medtronic/data/MedtronicHistoryData.kt
@@ -769,7 +769,7 @@ class MedtronicHistoryData @Inject constructor(
                 pheEnd.atechDateTime = DateTimeUtil.getATDWithAddedSeconds(tempBasalProcessDTO.itemOne.atechDateTime, -2)
                 pheEnd.addDecodedData("Object", TempBasalPair(0.0, false, 0))
 
-                var initialDuration = previousItem.durationAsSeconds
+                val initialDuration = previousItem.durationAsSeconds
 
                 previousItem.itemTwo = pheEnd