diff --git a/src/Spring/Spring.Core/Proxy/CompositionProxyTypeBuilder.cs b/src/Spring/Spring.Core/Proxy/CompositionProxyTypeBuilder.cs
index 8e9ad773..26717afd 100644
--- a/src/Spring/Spring.Core/Proxy/CompositionProxyTypeBuilder.cs
+++ b/src/Spring/Spring.Core/Proxy/CompositionProxyTypeBuilder.cs
@@ -197,8 +197,8 @@ namespace Spring.Proxy
             {
                 il.Emit(OpCodes.Ldarg_S, i);
             }
-            il.Emit(OpCodes.Newobj, TargetType.GetConstructor(
-                ReflectionUtils.GetParameterTypes(constructor.GetParameters())));
+
+            il.Emit(OpCodes.Newobj, constructor);
             il.Emit(OpCodes.Stfld, targetInstance);
         }
 
diff --git a/test/Spring/Spring.Core.Tests/Context/Support/ContextRegistryTests.cs b/test/Spring/Spring.Core.Tests/Context/Support/ContextRegistryTests.cs
index 27b3437c..af94a10b 100644
--- a/test/Spring/Spring.Core.Tests/Context/Support/ContextRegistryTests.cs
+++ b/test/Spring/Spring.Core.Tests/Context/Support/ContextRegistryTests.cs
@@ -169,6 +169,14 @@ namespace Spring.Context.Support
             IApplicationContext context = ContextRegistry.GetContext("bingo");
         }
 
+        [Test]
+        public void CanBuildProxyForClassWithProtectedConstructor()
+        {
+            CompositionProxyTypeBuilder typeBuilder = new CompositionProxyTypeBuilder();
+            typeBuilder.TargetType = typeof(ClassWithProtectedCtor);
+            typeBuilder.BuildProxyType();            
+        }
+
         [Test]
         public void ClearWithDynamicProxies()
         {
diff --git a/test/Spring/Spring.Core.Tests/Objects/ClassWithProtectedCtor.cs b/test/Spring/Spring.Core.Tests/Objects/ClassWithProtectedCtor.cs
new file mode 100644
index 00000000..82005da0
--- /dev/null
+++ b/test/Spring/Spring.Core.Tests/Objects/ClassWithProtectedCtor.cs
@@ -0,0 +1,13 @@
+namespace Spring.Objects
+{
+    public class ClassWithProtectedCtor : IOther
+    {
+        protected ClassWithProtectedCtor()
+        {
+        }
+
+        public void Absquatulate()
+        {                
+        }
+    }
+}
\ No newline at end of file
diff --git a/test/Spring/Spring.Core.Tests/Spring.Core.Tests.2010.csproj b/test/Spring/Spring.Core.Tests/Spring.Core.Tests.2010.csproj
index 04a141ef..6deafcd0 100644
--- a/test/Spring/Spring.Core.Tests/Spring.Core.Tests.2010.csproj
+++ b/test/Spring/Spring.Core.Tests/Spring.Core.Tests.2010.csproj
@@ -339,6 +339,7 @@
       <SubType>Code</SubType>
     </Compile>
     <Compile Include="HookableContextHandler.cs" />
+    <Compile Include="Objects\ClassWithProtectedCtor.cs" />
     <Compile Include="Objects\ExpressionTestObject.cs" />
     <Compile Include="Objects\Factory\Attributes\PostConstructAttributeTests.cs" />
     <Compile Include="Objects\Factory\Attributes\AutowireByTypeNormalTests.cs" />