diff --git a/src/Data/Matlab/MatlabWriter.cs b/src/Data/Matlab/MatlabWriter.cs
index 8c552f64..be331170 100644
--- a/src/Data/Matlab/MatlabWriter.cs
+++ b/src/Data/Matlab/MatlabWriter.cs
@@ -48,7 +48,7 @@ namespace MathNet.Numerics.Data.Matlab
 
         public static void Store(string filePath, IEnumerable<MatlabMatrix> matrices)
         {
-            using (var stream = File.OpenWrite(filePath))
+            using (var stream = File.Create(filePath))
             {
                 Store(stream, matrices);
             }
diff --git a/src/Data/Text/MatrixMarketWriter.cs b/src/Data/Text/MatrixMarketWriter.cs
index b86bc5d5..b5667bd7 100644
--- a/src/Data/Text/MatrixMarketWriter.cs
+++ b/src/Data/Text/MatrixMarketWriter.cs
@@ -47,7 +47,7 @@ namespace MathNet.Numerics.Data.Text
 
         public static void WriteMatrix<T>(string filePath, Matrix<T> matrix, Compression compression = Compression.Uncompressed) where T : struct, IEquatable<T>, IFormattable
         {
-            using (var stream = File.OpenWrite(filePath))
+            using (var stream = File.Create(filePath))
             {
                 switch (compression)
                 {
@@ -77,7 +77,7 @@ namespace MathNet.Numerics.Data.Text
 
         public static void WriteVector<T>(string filePath, Vector<T> vector, Compression compression = Compression.Uncompressed) where T : struct, IEquatable<T>, IFormattable
         {
-            using (var stream = File.OpenWrite(filePath))
+            using (var stream = File.Create(filePath))
             {
                 switch (compression)
                 {
diff --git a/src/DataUnitTests/Matlab/MatlabReaderTests.cs b/src/DataUnitTests/Matlab/MatlabReaderTests.cs
index 8bddf2ed..10018480 100644
--- a/src/DataUnitTests/Matlab/MatlabReaderTests.cs
+++ b/src/DataUnitTests/Matlab/MatlabReaderTests.cs
@@ -24,7 +24,6 @@
 // OTHER DEALINGS IN THE SOFTWARE.
 // </copyright>
 
-using System.IO;
 using System.Numerics;
 using MathNet.Numerics.Data.Matlab;
 using NUnit.Framework;