diff --git a/src/Numerics/LinearAlgebra/Complex32/Vector.cs b/src/Numerics/LinearAlgebra/Complex32/Vector.cs
index 9d9840c3..8aa2776b 100644
--- a/src/Numerics/LinearAlgebra/Complex32/Vector.cs
+++ b/src/Numerics/LinearAlgebra/Complex32/Vector.cs
@@ -28,7 +28,6 @@
 // OTHER DEALINGS IN THE SOFTWARE.
 // </copyright>
 
-using System.Security.Cryptography.X509Certificates;
 using MathNet.Numerics.LinearAlgebra.Storage;
 using MathNet.Numerics.Threading;
 using System;