diff --git a/sdk/communication/Azure.Communication.CallAutomation/src/CallConnection.cs b/sdk/communication/Azure.Communication.CallAutomation/src/CallConnection.cs
index 49f19df4af8be..f4ac656f77209 100644
--- a/sdk/communication/Azure.Communication.CallAutomation/src/CallConnection.cs
+++ b/sdk/communication/Azure.Communication.CallAutomation/src/CallConnection.cs
@@ -296,6 +296,8 @@ private static TransferToParticipantRequestInternal CreateTransferToParticipantR
 
             request.TransfereeCallerId = options.CallInvite.SourceCallerIdNumber == null ? null : new PhoneNumberIdentifierModel(options.CallInvite.SourceCallerIdNumber.PhoneNumber);
 
+            request.CustomContext = new CustomContextInternal();
+
             foreach (var sipHeader in options.CallInvite.SipHeaders)
             {
                 request.CustomContext.SipHeaders.Add(sipHeader.Key, sipHeader.Value);