diff --git a/cmd/oras/internal/option/common.go b/cmd/oras/internal/option/common.go
index 8e332782f..5713dd7b8 100644
--- a/cmd/oras/internal/option/common.go
+++ b/cmd/oras/internal/option/common.go
@@ -31,7 +31,8 @@ type Common struct {
 	Printer *output.Printer
 	TTY     *os.File
 	Debug   bool
-	noTTY   bool
+
+	noTTY bool
 }
 
 // ApplyFlags applies flags to a command flag set.