diff --git a/src/Nancy.Rdf.Tests/RdfResponseProcessorTests.cs b/src/Nancy.Rdf.Tests/RdfResponseProcessorTests.cs
index dc7ab09..8f3b6fe 100644
--- a/src/Nancy.Rdf.Tests/RdfResponseProcessorTests.cs
+++ b/src/Nancy.Rdf.Tests/RdfResponseProcessorTests.cs
@@ -175,6 +175,35 @@ public void Should_not_contain_unnecessary_443_port_in_base_url()
                 A<MemoryStream>._)).MustHaveHappened();
         }
 
+        [Test]
+        public void Should_not_preserve_custom_port_in_base_url()
+        {
+            // given
+            var serializer = A.Fake<IRdfSerializer>();
+            A.CallTo(() => serializer.CanSerialize(A<MediaRange>.Ignored)).Returns(true);
+            var processor = new RdfResponseProcessorTestable(new[] { serializer });
+
+            var path = new Url("http://example.com:2345/api/test")
+            {
+                BasePath = "api"
+            };
+
+            var nancyContext = new NancyContext
+            {
+                Request = new Request("GET", path)
+            };
+
+            // when
+            var response = processor.Process(new MediaRange("application/rdf+xml"), new object(), nancyContext);
+            response.Contents(new MemoryStream());
+
+            // then
+            A.CallTo(() => serializer.Serialize(
+                A<MediaRange>.That.Matches(mr => mr == RdfSerialization.RdfXml.MediaType),
+                A<WrappedModel>.That.Matches(wm => wm.BaseUrl.ToString() == "http://example.com:2345/"),
+                A<MemoryStream>._)).MustHaveHappened();
+        }
+
         [Test]
         public void Should_pass_actual_requested()
         {