diff --git a/GRBL-Plotter/GUI/MainFormObjects.cs b/GRBL-Plotter/GUI/MainFormObjects.cs
index 750b4a1d..21fbb451 100644
--- a/GRBL-Plotter/GUI/MainFormObjects.cs
+++ b/GRBL-Plotter/GUI/MainFormObjects.cs
@@ -51,7 +51,7 @@ public enum LogEnables { None = 0, Level1 = 1, Level2 = 2, Level3 = 4, Level4 =
 
     public static class MyApplication
     {
-        private static readonly string VersionAddOn = "";
+        private static readonly string VersionAddOn = ".a";
 
         public static string GetVersion()
         { return System.Windows.Forms.Application.ProductVersion.ToString() + VersionAddOn; }