diff --git a/GroBuf.Tests/TestReproForIssue5.cs b/GroBuf.Tests/TestReproForIssue5.cs
new file mode 100644
index 0000000..3dd6ed3
--- /dev/null
+++ b/GroBuf.Tests/TestReproForIssue5.cs
@@ -0,0 +1,56 @@
+using GroBuf.DataMembersExtracters;
+
+using NUnit.Framework;
+
+namespace GroBuf.Tests
+{
+    [Explicit("repro for https://github.com/skbkontur/GroBuf/issues/5")]
+    public class TestReproForIssue5
+    {
+        [Test]
+        public void AbstractProperty()
+        {
+            var bytes = serializer.Serialize(new DerivedWithAbstractProp(42));
+            Assert.That(serializer.Deserialize<DerivedWithAbstractProp>(bytes).Prop, Is.EqualTo(42));
+        }
+
+        [Test]
+        public void VirtualProperty()
+        {
+            var bytes = serializer.Serialize(new DerivedWithVirtualProp(42));
+            Assert.That(serializer.Deserialize<DerivedWithVirtualProp>(bytes).Prop, Is.EqualTo(42));
+        }
+
+        private readonly Serializer serializer = new Serializer(new AllPropertiesExtractor(), null, GroBufOptions.MergeOnRead);
+
+        private abstract class BaseWithVirtualProp
+        {
+            public virtual int Prop { get; }
+        }
+
+        private class DerivedWithVirtualProp : BaseWithVirtualProp
+        {
+            public DerivedWithVirtualProp(int prop)
+            {
+                Prop = prop;
+            }
+
+            public override int Prop { get; }
+        }
+
+        private abstract class BaseWithAbstractProp
+        {
+            public abstract int Prop { get; }
+        }
+
+        private class DerivedWithAbstractProp : BaseWithAbstractProp
+        {
+            public DerivedWithAbstractProp(int prop)
+            {
+                Prop = prop;
+            }
+
+            public override int Prop { get; }
+        }
+    }
+}
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