diff --git a/res/res_pjsip_t38.c b/res/res_pjsip_t38.c
index d1ec07610f..1dba15a121 100644
--- a/res/res_pjsip_t38.c
+++ b/res/res_pjsip_t38.c
@@ -113,7 +113,11 @@ static struct t38_parameters_task_data *t38_parameters_task_data_alloc(struct as
 
 	data->session = session;
 	ao2_ref(session, +1);
-	data->frame = frame;
+	data->frame = ast_frdup(frame);
+	if (!data->frame) {
+		ao2_ref(data, -1);
+		data = NULL;
+	}
 
 	return data;
 }
@@ -396,8 +400,6 @@ static struct ast_frame *t38_framehook_write(struct ast_sip_session *session, st
 		if (ast_sip_push_task(session->serializer, t38_interpret_parameters, data)) {
 			ao2_ref(data, -1);
 		}
-
-		f = &ast_null_frame;
 	} else if (f->frametype == AST_FRAME_MODEM) {
 		RAII_VAR(struct ast_sip_session_media *, session_media, NULL, ao2_cleanup);