diff --git a/N80/N80.csproj b/N80/N80.csproj
index d7c0f5e..ecf9740 100644
--- a/N80/N80.csproj
+++ b/N80/N80.csproj
@@ -8,7 +8,7 @@
     <RootNamespace>Konamiman.Nestor80.N80</RootNamespace>
     <PlatformTarget>AnyCPU</PlatformTarget>
     <Version>$(VersionPrefix)</Version>
-    <AssemblyVersion>1.1</AssemblyVersion>
+    <AssemblyVersion>1.2</AssemblyVersion>
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
diff --git a/N80/Program.cs b/N80/Program.cs
index 2a9d216..2031b52 100644
--- a/N80/Program.cs
+++ b/N80/Program.cs
@@ -25,6 +25,8 @@ namespace Konamiman.Nestor80.N80
     /// </summary>
     internal partial class Program
     {
+        const int PREVIEW_LEVEL = 1;
+
         const int ERR_SUCCESS = 0;
         const int ERR_BAD_ARGUMENTS = 1;
         const int ERR_CANT_OPEN_INPUT_FILE = 2;
@@ -1533,7 +1535,7 @@ private static string GetProgramVersion()
             while(version.EndsWith(".0") && version.Count(ch => ch is '.') > 1) {
                 version = version[..^2];
             }
-            return version;
+            return PREVIEW_LEVEL == 0 ? version : version + " preview " + PREVIEW_LEVEL;
         }
     }
 }
\ No newline at end of file