diff --git a/src/knx/application_layer.cpp b/src/knx/application_layer.cpp
index 05df9a5..1e8ccec 100644
--- a/src/knx/application_layer.cpp
+++ b/src/knx/application_layer.cpp
@@ -567,19 +567,19 @@ void ApplicationLayer::domainAddressSerialNumberReadResponse(Priority priority,
 
 //TODO: ApplicationLayer::IndividualAddressSerialNumberWriteRequest()
 //TODO: ApplicationLayer::IndividualAddressSerialNumberReadRequest()
-void ApplicationLayer::IndividualAddressSerialNumberReadResponse(Priority priority, HopCountType hopType, const SecurityControl &secCtrl, const uint8_t* rfDoA,
+void ApplicationLayer::IndividualAddressSerialNumberReadResponse(Priority priority, HopCountType hopType, const SecurityControl &secCtrl, const uint8_t* domainAddress,
                                                                  const uint8_t* knxSerialNumber)
 {
-    CemiFrame frame(13); 
+    CemiFrame frame(11); 
     APDU& apdu = frame.apdu();
     apdu.type(IndividualAddressSerialNumberResponse);
 
     uint8_t* data = apdu.data() + 1;
 
     memcpy(data, knxSerialNumber, 6);
-    memcpy(data + 6, rfDoA, 6);
+    memcpy(data + 6, domainAddress, 2);
 
-     //apdu.printPDU();
+    //apdu.printPDU();
 
     dataBroadcastRequest(AckDontCare, hopType, SystemPriority, apdu, secCtrl);
 }
diff --git a/src/knx/application_layer.h b/src/knx/application_layer.h
index bd14ef2..c7593c8 100644
--- a/src/knx/application_layer.h
+++ b/src/knx/application_layer.h
@@ -154,7 +154,7 @@ class ApplicationLayer
                                             uint8_t* testResult, uint16_t testResultLength);
     void domainAddressSerialNumberReadResponse(Priority priority, HopCountType hopType, const SecurityControl& secCtrl, const uint8_t* rfDoA,
                                                const uint8_t* knxSerialNumber);                                       
-    void IndividualAddressSerialNumberReadResponse(Priority priority, HopCountType hopType, const SecurityControl& secCtrl, const uint8_t* rfDoA,
+    void IndividualAddressSerialNumberReadResponse(Priority priority, HopCountType hopType, const SecurityControl& secCtrl, const uint8_t* domainAddress,
                                                const uint8_t* knxSerialNumber);                                       
 #pragma endregion
 
diff --git a/src/knx/bau27B0.cpp b/src/knx/bau27B0.cpp
index 9b119f9..6180539 100644
--- a/src/knx/bau27B0.cpp
+++ b/src/knx/bau27B0.cpp
@@ -169,10 +169,7 @@ void Bau27B0::domainAddressSerialNumberReadIndication(Priority priority, HopCoun
 
 void Bau27B0::individualAddressSerialNumberReadIndication(Priority priority, HopCountType hopType, const SecurityControl &secCtrl, uint8_t* knxSerialNumber)
 {
-    // If the received serial number matches our serial number
-    // then send a response with the current RF domain address stored in the RF medium object and the serial number
-    if (!memcmp(knxSerialNumber, _deviceObj.propertyData(PID_SERIAL_NUMBER), 6))
-        _appLayer.IndividualAddressSerialNumberReadResponse(priority, hopType, secCtrl, _rfMediumObj.rfDomainAddress(), knxSerialNumber);
+    #pragma warning "individualAddressSerialNumberReadIndication is not available for rf"
 }
 
 void Bau27B0::domainAddressSerialNumberWriteLocalConfirm(Priority priority, HopCountType hopType, const SecurityControl &secCtrl, const uint8_t* rfDoA,
diff --git a/src/knx/bau_systemB.cpp b/src/knx/bau_systemB.cpp
index 9b8897f..fc1fdf8 100644
--- a/src/knx/bau_systemB.cpp
+++ b/src/knx/bau_systemB.cpp
@@ -494,7 +494,7 @@ void BauSystemB::individualAddressSerialNumberReadIndication(Priority priority,
     // An open medium BAU has to override this method and provide a proper domain address.
     if (!memcmp(knxSerialNumber, _deviceObj.propertyData(PID_SERIAL_NUMBER), 6))
     {
-        uint8_t emptyDomainAddress[6] = {0x00};
+        uint8_t emptyDomainAddress[2] = {0x00};
         applicationLayer().IndividualAddressSerialNumberReadResponse(priority, hopType, secCtrl, emptyDomainAddress, knxSerialNumber);
     }
 }