diff --git a/core/AmB2BSession.cpp b/core/AmB2BSession.cpp
index 302b0a14..fbcceef2 100644
--- a/core/AmB2BSession.cpp
+++ b/core/AmB2BSession.cpp
@@ -92,6 +92,7 @@ AmB2BSession::AmB2BSession(const string& other_local_tag, AmSipDialog* p_dlg,
   : AmSession(p_dlg),
     other_id(other_local_tag),
     sip_relay_only(true),
+    a_leg(false),
     subs(p_subs),
     rtp_relay_mode(RTP_Direct),
     rtp_relay_force_symmetric_rtp(false),