diff --git a/tools/generator/Tests/Compiler.cs b/tools/generator/Tests/Compiler.cs
index b32445040..b41fb6168 100644
--- a/tools/generator/Tests/Compiler.cs
+++ b/tools/generator/Tests/Compiler.cs
@@ -40,6 +40,7 @@ public static Assembly Compile (Xamarin.Android.Binder.CodeGeneratorOptions opti
 			parameters.CompilerOptions = "/unsafe";
 			parameters.OutputAssembly = assemblyFileName;
 			parameters.ReferencedAssemblies.Add (unitTestFrameworkAssemblyPath);
+			parameters.ReferencedAssemblies.Add (typeof (Enumerable).Assembly.Location);
 
 			var binDir  = Path.GetDirectoryName (typeof (BaseGeneratorTest).Assembly.Location);
 			var facDir  = GetFacadesPath ();