diff --git a/fakebts/RSLMsg.st b/fakebts/RSLMsg.st
index 5710f52..f50c690 100644
--- a/fakebts/RSLMsg.st
+++ b/fakebts/RSLMsg.st
@@ -1030,6 +1030,10 @@ RSLDedicatedChannelManagement subclass: RSLConnectionFailure [
     <comment: 'I represent a GSM 08.58 GSM 8.4.4 CONNECTION FAILURE INDICATION'>
     <rslMessageType: #messageDedConnectionFailure>
     <rslMessageDefinition: #connectionFailureMessage>
+
+    cause: aCause [
+        cause := aCause
+    ]
 ]
 
 RSLDedicatedChannelManagement subclass: RSLSacchDeactivate [
@@ -1158,6 +1162,10 @@ RSLRadioLinkManagement subclass: RSLErrorIndication [
     RSLErrorIndication class >> isTransparent [
         ^1
     ]
+
+    rlmCause: aCause [
+        rlm_cause := aCause
+    ]
 ]
 
 RSLRadioLinkManagement subclass: RSLEstablishRequest [