diff --git a/doc/obfs-server.asciidoc b/doc/obfs-server.asciidoc
index 27967f7..e7d3de3 100644
--- a/doc/obfs-server.asciidoc
+++ b/doc/obfs-server.asciidoc
@@ -79,11 +79,6 @@ Enable Multipath TCP.
 +
 Only available with MPTCP enabled Linux kernel.
 
---mptcp::
-Enable Multipath TCP.
-+
-Only available with MPTCP enabled Linux kernel.
-
 --obfs <http|tls>::
 Enable HTTP or TLS obfuscating. (Experimental)