diff --git a/SparkleLib/SparkleConfig.cs b/SparkleLib/SparkleConfig.cs
index 39177e8e..b8122364 100644
--- a/SparkleLib/SparkleConfig.cs
+++ b/SparkleLib/SparkleConfig.cs
@@ -59,7 +59,7 @@ namespace SparkleLib {
             string user_name  = new UnixUserInfo (UnixEnvironment.UserName).RealName;
 
             if (string.IsNullOrEmpty (user_name))
-                user_name = "";
+                user_name = "Unknown";
             else
                 user_name = user_name.TrimEnd (",".ToCharArray());