diff --git a/main.go b/main.go
index fa884f6..ce2bb06 100644
--- a/main.go
+++ b/main.go
@@ -172,5 +172,7 @@ func main() {
 				}
 			}
 		}
+	} else {
+		fmt.Println("no duplicated file")
 	}
 }