diff --git a/apps/dsm/DSMCall.cpp b/apps/dsm/DSMCall.cpp
index 886435ca..c8ae6eb6 100644
--- a/apps/dsm/DSMCall.cpp
+++ b/apps/dsm/DSMCall.cpp
@@ -109,7 +109,9 @@ void DSMCall::onInvite(const AmSipRequest& req) {
     
   bool run_session_invite = engine.onInvite(req, this);
 
-  avar[DSM_AVAR_REQUEST] = AmArg(&req);
+  // pass AmSipRequest for use by mod_dlg
+  DSMSipRequest* sip_req = new DSMSipRequest(&req);
+  avar[DSM_AVAR_REQUEST] = AmArg(sip_req);
 
   DBG("before runEvent(this, this, DSMCondition::Invite);\n");
   AmSipDialog::Status old_st = dlg->getStatus();