diff --git a/SparkleLib/SparkleFetcherBase.cs b/SparkleLib/SparkleFetcherBase.cs
index 70f77cea..79c95761 100755
--- a/SparkleLib/SparkleFetcherBase.cs
+++ b/SparkleLib/SparkleFetcherBase.cs
@@ -184,6 +184,7 @@ namespace SparkleLib {
 
             if (File.Exists (identifier_path)) {
                 Identifier = File.ReadAllText (identifier_path).Trim ();
+				File.SetAttributes (identifier_path, FileAttributes.Hidden);
 
             } else {
                 Identifier = CreateIdentifier ();