diff --git a/src/shrpx.cc b/src/shrpx.cc
index 9c35e0e0..77bd5d67 100644
--- a/src/shrpx.cc
+++ b/src/shrpx.cc
@@ -1198,8 +1198,7 @@ Options:
   The options are categorized into several groups.
 
 Connections:
-  -b, --backend=(<HOST>,<PORT>|unix:<PATH>)[;[<PATTERN>[:...]]
-                [;proto=<PROTO>][;tls]]
+  -b, --backend=(<HOST>,<PORT>|unix:<PATH>)[;[<PATTERN>[:...]][;proto=<PROTO>][;tls]]
               Set  backend  host  and   port.   The  multiple  backend
               addresses are  accepted by repeating this  option.  UNIX
               domain socket  can be  specified by prefixing  path name