diff --git a/drivers/aic8800/aic8800_fdrv/aicwf_tcp_ack.c b/drivers/aic8800/aic8800_fdrv/aicwf_tcp_ack.c
index 4c0c887..7b3084d 100644
--- a/drivers/aic8800/aic8800_fdrv/aicwf_tcp_ack.c
+++ b/drivers/aic8800/aic8800_fdrv/aicwf_tcp_ack.c
@@ -106,7 +106,11 @@ void tcp_ack_deinit(struct rwnx_hw *priv)
 		drop_msg = NULL;
 
 		write_seqlock_bh(&ack_m->ack_info[i].seqlock);
-		timer_delete(&ack_m->ack_info[i].timer);
+		#if LINUX_VERSION_CODE >= KERNEL_VERSION(6, 15, 0)
+			timer_delete(&ack_m->ack_info[i].timer);
+		#else
+			del_timer(&ack_m->ack_info[i].timer);
+		#endif
 		drop_msg = ack_m->ack_info[i].msgbuf;
 		ack_m->ack_info[i].msgbuf = NULL;
 		write_sequnlock_bh(&ack_m->ack_info[i].seqlock);