diff --git a/include/net/tcp.h b/include/net/tcp.h
index dba22fc..364426a 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -991,7 +991,7 @@
 
 static inline bool tcp_in_slow_start(const struct tcp_sock *tp)
 {
-	return tp->snd_cwnd <= tp->snd_ssthresh;
+	return tp->snd_cwnd < tp->snd_ssthresh;
 }
 
 static inline bool tcp_in_initial_slowstart(const struct tcp_sock *tp)