diff --git a/Klient/Klient/Klient.Android/MainActivity.cs b/Klient/Klient/Klient.Android/MainActivity.cs
index e286b2d..b2a2d67 100644
--- a/Klient/Klient/Klient.Android/MainActivity.cs
+++ b/Klient/Klient/Klient.Android/MainActivity.cs
@@ -51,6 +51,12 @@ namespace Klient.Droid
                 FindViewById<TextView>(Resource.Id.ErrorLogIn).Text = "Hasło musi mieć od 3 do 12 znaków!";
                 FindViewById<EditText>(Resource.Id.Password).Text = "";
             }
+            else if (string.IsNullOrWhiteSpace(new NetworkCredential("", Password).Password))
+            {
+                FindViewById<TextView>(Resource.Id.ErrorLogIn).Text = "Hasło musi mieć od 3 do 12 znaków!";
+                FindViewById<EditText>(Resource.Id.Login).Text = "";
+                FindViewById<EditText>(Resource.Id.Password).Text = "";
+            }
             else
             {
                 var values = new Dictionary<string, string>