diff --git a/src/knx/application_layer.cpp b/src/knx/application_layer.cpp
index f7bb848..fd7bb09 100644
--- a/src/knx/application_layer.cpp
+++ b/src/knx/application_layer.cpp
@@ -86,21 +86,18 @@ void ApplicationLayer::dataGroupConfirm(AckType ack, HopCountType hopType, Prior
             _bau.groupValueReadLocalConfirm(ack, _savedAsapReadRequest, priority, hopType, secCtrl, status);
         else 
             println("dataGroupConfirm: APDU-Type GroupValueRead has _savedAsapReadRequest = 0");
-        _savedAsapReadRequest = 0;
         break;
     case GroupValueResponse:
         if (_savedAsapResponse > 0)
             _bau.groupValueReadResponseConfirm(ack, _savedAsapResponse, priority, hopType, secCtrl, apdu.data(), apdu.length() - 1, status);
         else 
             println("dataGroupConfirm: APDU-Type GroupValueResponse has _savedAsapResponse = 0");
-        _savedAsapResponse = 0;
         break;
     case GroupValueWrite:
         if (_savedAsapWriteRequest > 0)
             _bau.groupValueWriteLocalConfirm(ack, _savedAsapWriteRequest, priority, hopType, secCtrl, apdu.data(), apdu.length() - 1, status);
         else 
             println("dataGroupConfirm: APDU-Type GroupValueWrite has _savedAsapWriteRequest = 0");
-        _savedAsapWriteRequest = 0;
         break;
     default:
         print("datagroup-confirm: unhandled APDU-Type: ");