diff --git a/csharp/src/Google.Protobuf.Test/IssuesTest.cs b/csharp/src/Google.Protobuf.Test/IssuesTest.cs
new file mode 100644
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+++ b/csharp/src/Google.Protobuf.Test/IssuesTest.cs
@@ -0,0 +1,63 @@
+﻿#region Copyright notice and license
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 Google Inc.  All rights reserved.
+// https://developers.google.com/protocol-buffers/
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#endregion
+
+using Google.Protobuf.Reflection;
+using UnitTest.Issues.TestProtos;
+using NUnit.Framework;
+
+
+namespace Google.Protobuf
+{
+    /// <summary>
+    /// Tests for issues which aren't easily compartmentalized into other unit tests.
+    /// </summary>
+    public class IssuesTest
+    {
+        // Issue 45
+        [Test]
+        public void FieldCalledItem()
+        {
+            ItemField message = new ItemField { Item = 3 };
+            FieldDescriptor field = ItemField.Descriptor.FindFieldByName("item");
+            Assert.NotNull(field);
+            Assert.AreEqual(3, (int)field.Accessor.GetValue(message));
+        }
+
+        [Test]
+        public void ReservedNames()
+        {
+            var message = new ReservedNames { Types_ = 10, Descriptor_ = 20 };
+            // Underscores aren't reflected in the JSON.
+            Assert.AreEqual("{ \"types\": 10, \"descriptor\": 20 }", message.ToString());
+        }
+    }
+}