diff --git a/src/Microsoft.DotNet.Compiler.Common/AssemblyInfoFileGenerator.cs b/src/Microsoft.DotNet.Compiler.Common/AssemblyInfoFileGenerator.cs
index 3e4408bc8..acf511e27 100644
--- a/src/Microsoft.DotNet.Compiler.Common/AssemblyInfoFileGenerator.cs
+++ b/src/Microsoft.DotNet.Compiler.Common/AssemblyInfoFileGenerator.cs
@@ -16,7 +16,7 @@ namespace Microsoft.DotNet.Cli.Compiler.Common
 {
     public class AssemblyInfoFileGenerator
     {
-        public static string Generate(AssemblyInfoOptions metadata, IEnumerable<string> sourceFiles)
+        public static string GenerateCSharp(AssemblyInfoOptions metadata, IEnumerable<string> sourceFiles)
         {
             var projectAttributes = GetProjectAttributes(metadata);
 
@@ -43,7 +43,8 @@ namespace Microsoft.DotNet.Cli.Compiler.Common
                 }
             }
 
-            return string.Join(Environment.NewLine, projectAttributes
+            string autoGeneratedHeader = "// <auto-generated> This file has been auto generated. </auto-generated>\r\n";
+            return autoGeneratedHeader + string.Join(Environment.NewLine, projectAttributes
                 .Where(projectAttribute => projectAttribute.Value != null && !existingAttributes.Contains(projectAttribute.Key))
                 .Select(projectAttribute => $"[assembly:{projectAttribute.Key.FullName}(\"{projectAttribute.Value}\")]"));
         }
diff --git a/src/dotnet/commands/dotnet-compile-csc/Program.cs b/src/dotnet/commands/dotnet-compile-csc/Program.cs
index 0053649f8..6d84fe0ce 100644
--- a/src/dotnet/commands/dotnet-compile-csc/Program.cs
+++ b/src/dotnet/commands/dotnet-compile-csc/Program.cs
@@ -90,7 +90,8 @@ namespace Microsoft.DotNet.Tools.Compiler.Csc
             // Generate assembly info
             var assemblyInfo = Path.Combine(tempOutDir, $"dotnet-compile.assemblyinfo.cs");
             
-            File.WriteAllText(assemblyInfo, AssemblyInfoFileGenerator.Generate(assemblyInfoOptions, sources));
+            File.WriteAllText(assemblyInfo, AssemblyInfoFileGenerator.GenerateCSharp(assemblyInfoOptions, sources));
+
             allArgs.Add($"\"{assemblyInfo}\"");
 
             if (outputName != null)
diff --git a/src/dotnet/commands/dotnet-resgen/ResourceAssemblyGenerator.cs b/src/dotnet/commands/dotnet-resgen/ResourceAssemblyGenerator.cs
index c95a56dba..473b1664d 100644
--- a/src/dotnet/commands/dotnet-resgen/ResourceAssemblyGenerator.cs
+++ b/src/dotnet/commands/dotnet-resgen/ResourceAssemblyGenerator.cs
@@ -58,7 +58,7 @@ namespace Microsoft.DotNet.Tools.Resgen
 
             compilation = compilation.AddSyntaxTrees(new[]
             {
-                CSharpSyntaxTree.ParseText(AssemblyInfoFileGenerator.Generate(metadata, Enumerable.Empty<string>()))
+                CSharpSyntaxTree.ParseText(AssemblyInfoFileGenerator.GenerateCSharp(metadata, Enumerable.Empty<string>()))
             });
 
             var result = compilation.Emit(outputStream, manifestResources: resourceDescriptions);