diff --git a/src/tests/efl_mono/Eo.cs b/src/tests/efl_mono/Eo.cs
index 8a5f4646a9..e9ddb66fac 100644
--- a/src/tests/efl_mono/Eo.cs
+++ b/src/tests/efl_mono/Eo.cs
@@ -23,10 +23,6 @@ namespace TestSuite
 
 class TestEo
 {
-    private class Derived : Dummy.TestObject
-    {
-    }
-
     public static void return_null_object()
     {
         var testing = new Dummy.TestObject();