diff --git a/core/AmSipMsg.h b/core/AmSipMsg.h
index f1f8d80c..73163996 100644
--- a/core/AmSipMsg.h
+++ b/core/AmSipMsg.h
@@ -16,6 +16,7 @@ class _AmSipMsgInDlg
   string       contact;
   string       content_type;
 
+  string       via1;
   string       hdrs;
   string       body;
   unsigned int cseq;
diff --git a/core/SipCtrlInterface.cpp b/core/SipCtrlInterface.cpp
index b9416407..ea1dd632 100644
--- a/core/SipCtrlInterface.cpp
+++ b/core/SipCtrlInterface.cpp
@@ -705,6 +705,8 @@ void SipCtrlInterface::prepare_routes_uac(const list<sip_header*>& routes, strin
 	    route_field += ", " + c2stlstr((*it)->value);
 	}
     }
+
+    req.via1 = c2stlstr(msg->via1->value);
 }
 
 void SipCtrlInterface::prepare_routes_uas(const list<sip_header*>& routes, string& route_field)