diff --git a/msg.go b/msg.go
index 1c2aba6..8595d12 100644
--- a/msg.go
+++ b/msg.go
@@ -329,7 +329,7 @@ func UnzipMessages(z []byte) error {
 	zr, err := zip.NewReader(r, len(z))
 
 	for _, f := range zr.File {
-		log.Fprintf("File : %s\n", f.Name)
+		log.Printf("File : %s\n", f.Name)
 	}
 
 	return nil