diff --git a/src/Numerics/LinearAlgebra/Complex/SparseMatrix.cs b/src/Numerics/LinearAlgebra/Complex/SparseMatrix.cs
index 2ccbd643..6bed52cb 100644
--- a/src/Numerics/LinearAlgebra/Complex/SparseMatrix.cs
+++ b/src/Numerics/LinearAlgebra/Complex/SparseMatrix.cs
@@ -31,7 +31,6 @@
 namespace MathNet.Numerics.LinearAlgebra.Complex
 {
     using Generic;
-    using Properties;
     using Storage;
     using System;
     using System.Collections.Generic;
diff --git a/src/Numerics/LinearAlgebra/Complex32/SparseMatrix.cs b/src/Numerics/LinearAlgebra/Complex32/SparseMatrix.cs
index 7e88d394..503fcb24 100644
--- a/src/Numerics/LinearAlgebra/Complex32/SparseMatrix.cs
+++ b/src/Numerics/LinearAlgebra/Complex32/SparseMatrix.cs
@@ -32,7 +32,6 @@ namespace MathNet.Numerics.LinearAlgebra.Complex32
 {
     using Generic;
     using Numerics;
-    using Properties;
     using Storage;
     using System;
     using System.Collections.Generic;
diff --git a/src/Numerics/LinearAlgebra/Double/SparseMatrix.cs b/src/Numerics/LinearAlgebra/Double/SparseMatrix.cs
index 532f6b42..1985391c 100644
--- a/src/Numerics/LinearAlgebra/Double/SparseMatrix.cs
+++ b/src/Numerics/LinearAlgebra/Double/SparseMatrix.cs
@@ -31,7 +31,6 @@
 namespace MathNet.Numerics.LinearAlgebra.Double
 {
     using Generic;
-    using Properties;
     using Storage;
     using System;
     using System.Collections.Generic;
diff --git a/src/Numerics/LinearAlgebra/Single/SparseMatrix.cs b/src/Numerics/LinearAlgebra/Single/SparseMatrix.cs
index d417e1ec..411c261b 100644
--- a/src/Numerics/LinearAlgebra/Single/SparseMatrix.cs
+++ b/src/Numerics/LinearAlgebra/Single/SparseMatrix.cs
@@ -31,7 +31,6 @@
 namespace MathNet.Numerics.LinearAlgebra.Single
 {
     using Generic;
-    using Properties;
     using Storage;
     using System;
     using System.Collections.Generic;