diff --git a/README.md b/README.md
index 6346878..3524cc3 100644
--- a/README.md
+++ b/README.md
@@ -183,7 +183,7 @@ Examples:
     -listen on :1081 as transparent redirect server, :53 as dns server, use forward chain: server1 -> server2.
 
   glider -listen socks5://:1080 -forward ss://method:pass@server1:port1 -forward ss://method:pass@server2:port2 -strategy rr
-    -listen on :1080 as socks5 server, forward requests via server1 and server2 in roundrbin mode.
+    -listen on :1080 as socks5 server, forward requests via server1 and server2 in round robin mode.
 ```
 
 ## Advanced Usage
diff --git a/conf.go b/conf.go
index ba231a0..f20ce5b 100644
--- a/conf.go
+++ b/conf.go
@@ -207,6 +207,6 @@ func usage() {
 	fmt.Fprintf(os.Stderr, "    -listen on :1081 as transparent redirect server, :53 as dns server, use forward chain: server1 -> server2.\n")
 	fmt.Fprintf(os.Stderr, "\n")
 	fmt.Fprintf(os.Stderr, "  "+app+" -listen socks5://:1080 -forward ss://method:pass@server1:port1 -forward ss://method:pass@server2:port2 -strategy rr\n")
-	fmt.Fprintf(os.Stderr, "    -listen on :1080 as socks5 server, forward requests via server1 and server2 in roundrbin mode.\n")
+	fmt.Fprintf(os.Stderr, "    -listen on :1080 as socks5 server, forward requests via server1 and server2 in round robin mode.\n")
 	fmt.Fprintf(os.Stderr, "\n")
 }