diff --git a/doc/nghttpx.1 b/doc/nghttpx.1
index a05490ea..d1f8ceaf 100644
--- a/doc/nghttpx.1
+++ b/doc/nghttpx.1
@@ -1840,7 +1840,7 @@ internally on startup and reload.
 .UNINDENT
 .INDENT 0.0
 .TP
-.B \-\-frontend\-quic\-server\-id=<HEXSTRING>
+.B \-\-quic\-server\-id=<HEXSTRING>
 Specify server  ID encoded in Connection  ID to identify
 this  particular  server  instance.   Connection  ID  is
 encrypted and  this part is  not visible in  public.  It
diff --git a/doc/nghttpx.1.rst b/doc/nghttpx.1.rst
index dd22f261..60374068 100644
--- a/doc/nghttpx.1.rst
+++ b/doc/nghttpx.1.rst
@@ -1680,7 +1680,7 @@ HTTP/3 and QUIC
     or  reading  a  file,  a keying  material  is  generated
     internally on startup and reload.
 
-.. option:: --frontend-quic-server-id=<HEXSTRING>
+.. option:: --quic-server-id=<HEXSTRING>
 
     Specify server  ID encoded in Connection  ID to identify
     this  particular  server  instance.   Connection  ID  is