diff --git a/test/Ocelot.UnitTests/Requester/HttpExeptionToErrorMapperTests.cs b/test/Ocelot.UnitTests/Requester/HttpExeptionToErrorMapperTests.cs
index bad8668e..14413aad 100644
--- a/test/Ocelot.UnitTests/Requester/HttpExeptionToErrorMapperTests.cs
+++ b/test/Ocelot.UnitTests/Requester/HttpExeptionToErrorMapperTests.cs
@@ -38,6 +38,14 @@
             error.ShouldBeOfType<RequestCanceledError>();
         }
 
+        [Fact]
+        public void should_return_request_canceled_for_subtype()
+        {
+            var error = _mapper.Map(new SomeException());
+
+            error.ShouldBeOfType<RequestCanceledError>();
+        }
+
         [Fact]
         public void should_return_error_from_mapper()
         {
@@ -56,5 +64,8 @@
 
             error.ShouldBeOfType<AnyError>();
         }
+
+        private class SomeException : OperationCanceledException
+        { }
     }
 }