diff --git a/src/smf/n4-handler.c b/src/smf/n4-handler.c
index 0aa4d6643..948075b75 100644
--- a/src/smf/n4-handler.c
+++ b/src/smf/n4-handler.c
@@ -485,7 +485,6 @@ void smf_5gc_n4_handle_session_modification_response(
             ogs_assert(stream);
 
             ogs_assert(flags & OGS_PFCP_MODIFY_SESSION);
-
             n1smbuf = gsm_build_pdu_session_modification_command(
                     sess, sess->pti,
                     OGS_NAS_QOS_CODE_DELETE_EXISTING_QOS_RULE,
diff --git a/src/smf/smf-sm.c b/src/smf/smf-sm.c
index 297ef6dcf..9a9a618af 100644
--- a/src/smf/smf-sm.c
+++ b/src/smf/smf-sm.c
@@ -822,6 +822,8 @@ void smf_state_operational(ogs_fsm_t *s, smf_event_t *e)
         ogs_assert(sess);
         ogs_assert(OGS_FSM_STATE(&sess->sm));
 
+        sess->pti = nas_message.gsm.h.procedure_transaction_identity;
+
         e->nas.message = &nas_message;
         ogs_fsm_dispatch(&sess->sm, e);