diff --git a/Crypto Notepad/MainForm.cs b/Crypto Notepad/MainForm.cs
index ee524f9..59d21b2 100644
--- a/Crypto Notepad/MainForm.cs	
+++ b/Crypto Notepad/MainForm.cs	
@@ -50,7 +50,7 @@ protected override void WndProc(ref Message m)
             base.WndProc(ref m);
         }
 
-        static string SizeSuffix(Int64 value)
+        static string SizeSuffix(long value)
         {
             if (value < 0) { return "-" + SizeSuffix(-value); }