diff --git a/proxy/redir/tproxy_other.go b/proxy/redir/tproxy_other.go
index 88e4de50..c20ea7d7 100644
--- a/proxy/redir/tproxy_other.go
+++ b/proxy/redir/tproxy_other.go
@@ -8,5 +8,5 @@ import (
 )
 
 func setsockopt(rc syscall.RawConn, addr string) error {
-	return errors.New("Not supported on current platform")
+	return errors.New("not supported on current platform")
 }