diff --git a/share/man/man4/tcp.4 b/share/man/man4/tcp.4
index a62b71a1b4da..466949dee31b 100644
--- a/share/man/man4/tcp.4
+++ b/share/man/man4/tcp.4
@@ -773,6 +773,7 @@ when trying to use a TCP function block that is not available;
 .Xr mod_cc 4 ,
 .Xr siftr 4 ,
 .Xr syncache 4 ,
+.Xr tcp_bbr 4 ,
 .Xr setkey 8 ,
 .Xr tcp_functions 9
 .Rs