diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index ac0a7afb8aaf..e3d88f702cc0 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -4220,6 +4220,13 @@ void tcp_parse_options(const struct net *net,
 				 * checked (see tcp_v{4,6}_rcv()).
 				 */
 				break;
+#endif
+#ifdef CONFIG_TCP_AO
+			case TCPOPT_AO:
+				/* TCP AO has already been checked
+				 * (see tcp_inbound_ao_hash()).
+				 */
+				break;
 #endif
 			case TCPOPT_FASTOPEN:
 				tcp_parse_fastopen_option(