diff --git a/PocketSharp/Components/Authentification.cs b/PocketSharp/Components/Authentification.cs
index abc204e..10f7605 100644
--- a/PocketSharp/Components/Authentification.cs
+++ b/PocketSharp/Components/Authentification.cs
@@ -50,7 +50,7 @@ namespace PocketSharp
         RequestCode = requestCode;
       }
 
-      return new Uri(string.Format(authentificationUri, RequestCode, Uri.EscapeDataString(CallbackUri)));
+      return new Uri(string.Format(authentificationUri, RequestCode, CallbackUri));
     }