diff --git a/YololAssembler/Grammar/AST/Program.cs b/YololAssembler/Grammar/AST/Program.cs
index dc7e809..ac1cb8b 100644
--- a/YololAssembler/Grammar/AST/Program.cs
+++ b/YololAssembler/Grammar/AST/Program.cs
@@ -25,6 +25,9 @@ public Result Compile(bool compress = true)
             // Replace line labels
             lines = Apply(Labels().ToArray(), lines.ToArray()).ToArray();
 
+            // Replace implicit line labels
+            lines = ApplyImplicitLabels(lines).ToArray();
+
             // Early out if compression should not be applied
             var yolol = string.Join("\n", lines);
             if (!compress)
@@ -39,6 +42,16 @@ public Result Compile(bool compress = true)
             return new Result(Compress(parsedYolol.Ok));
         }
 
+        private IEnumerable<string> ApplyImplicitLabels(IEnumerable<string> lines)
+        {
+            var lineNum = 1;
+            foreach (var line in lines)
+            {
+                yield return line.Replace("@", lineNum.ToString());
+                lineNum++;
+            }
+        }
+
         private static string Compress(Yolol.Grammar.AST.Program yolol)
         {
             //todo: compress
diff --git a/YololAssembler/YololAssembler.csproj b/YololAssembler/YololAssembler.csproj
index a8f0b42..39745ea 100644
--- a/YololAssembler/YololAssembler.csproj
+++ b/YololAssembler/YololAssembler.csproj
@@ -4,6 +4,9 @@
     <OutputType>Exe</OutputType>
     <TargetFramework>netcoreapp3.1</TargetFramework>
     <Nullable>enable</Nullable>
+    <StartupObject>YololAssembler.Program</StartupObject>
+    <Authors>Martin Evans</Authors>
+    <Company>Cylon</Company>
   </PropertyGroup>
 
   <ItemGroup>