diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c
index ba5f4f44f4b3cc..fd1c2e866e8ef0 100644
--- a/net/mptcp/protocol.c
+++ b/net/mptcp/protocol.c
@@ -622,7 +622,7 @@ static bool mptcp_check_data_fin(struct sock *sk)
 
 static void mptcp_dss_corruption(struct mptcp_sock *msk, struct sock *ssk)
 {
-	if (list_is_singular(&msk->conn_list) && msk->first == ssk) {
+	if (READ_ONCE(msk->allow_infinite_fallback)) {
 		MPTCP_INC_STATS(sock_net(ssk),
 				MPTCP_MIB_DSSCORRUPTIONFALLBACK);
 		mptcp_do_fallback(ssk);