diff --git a/res/res_pjsip_t38.c b/res/res_pjsip_t38.c
index 2f36dfffbe22b140ef52196fe93a5bf3424a5970..285e9015e6da8f55bec659c4e5232d61a20c7499 100644
--- a/res/res_pjsip_t38.c
+++ b/res/res_pjsip_t38.c
@@ -446,7 +446,8 @@ static void t38_attach_framehook(struct ast_sip_session *session)
 		.event_cb = t38_framehook,
 	};
 
-	if ((ast_channel_state(session->channel) == AST_STATE_UP) || !session->endpoint->media.t38.enabled) {
+	if (!session->channel || (ast_channel_state(session->channel) == AST_STATE_UP) ||
+	    !session->endpoint->media.t38.enabled) {
 		return;
 	}