diff --git a/src/smf/context.c b/src/smf/context.c
index 3663bb976..ab2ecc070 100644
--- a/src/smf/context.c
+++ b/src/smf/context.c
@@ -1549,6 +1549,7 @@ void smf_sess_remove(smf_sess_t *sess)
     OGS_TLV_CLEAR_DATA(&sess->gtp.ue_pco);
     OGS_TLV_CLEAR_DATA(&sess->gtp.user_location_information);
     OGS_TLV_CLEAR_DATA(&sess->gtp.ue_timezone);
+    OGS_TLV_CLEAR_DATA(&sess->gtp.charging_characteristics);
 
     OGS_NAS_CLEAR_DATA(&sess->nas.ue_pco);