diff --git a/src/Numerics/Numerics.csproj b/src/Numerics/Numerics.csproj
index 4f6413ae..9c7227b9 100644
--- a/src/Numerics/Numerics.csproj
+++ b/src/Numerics/Numerics.csproj
@@ -120,7 +120,6 @@
     <Compile Include="Optimization\Exceptions.cs" />
     <Compile Include="Optimization\IObjectiveFunction.cs" />
     <Compile Include="Optimization\Implementation\LineSearchOutput.cs" />
-    <Compile Include="Optimization\Implementation\NullObjectiveFunction.cs" />
     <Compile Include="Optimization\Implementation\CheckedObjectiveFunction.cs" />
     <Compile Include="Optimization\Implementation\WeakWolfeLineSearch.cs" />
     <Compile Include="Optimization\IUnconstrainedMinimizer.cs" />
diff --git a/src/Numerics/Optimization/Implementation/NullObjectiveFunction.cs b/src/Numerics/Optimization/Implementation/NullObjectiveFunction.cs
deleted file mode 100644
index a279a620..00000000
--- a/src/Numerics/Optimization/Implementation/NullObjectiveFunction.cs
+++ /dev/null
@@ -1,34 +0,0 @@
-using System;
-using MathNet.Numerics.LinearAlgebra;
-
-namespace MathNet.Numerics.Optimization.Implementation
-{
-    public class NullObjectiveFunction : BaseObjectiveFunction
-    {
-        public NullObjectiveFunction(Vector<double> point)
-            : base(false, false)
-        {
-            Point = point;
-        }
-
-        protected override void SetValue()
-        {
-            throw new NotImplementedException();
-        }
-
-        protected override void SetGradient()
-        {
-            throw new NotImplementedException();
-        }
-
-        protected override void SetHessian()
-        {
-            throw new NotImplementedException();
-        }
-
-        public override IObjectiveFunction Fork()
-        {
-            throw new NotImplementedException();
-        }
-    }
-}