diff --git a/src/knx/application_layer.cpp b/src/knx/application_layer.cpp
index 05df9a5..c6aedb0 100644
--- a/src/knx/application_layer.cpp
+++ b/src/knx/application_layer.cpp
@@ -551,7 +551,7 @@ void ApplicationLayer::systemNetworkParameterReadResponse(Priority priority, Hop
 void ApplicationLayer::domainAddressSerialNumberReadResponse(Priority priority, HopCountType hopType, const SecurityControl &secCtrl, const uint8_t* rfDoA,
                                                              const uint8_t* knxSerialNumber)
 {
-    CemiFrame frame(13); 
+    CemiFrame frame(11); 
     APDU& apdu = frame.apdu();
     apdu.type(DomainAddressSerialNumberResponse);