diff --git a/X10D/src/Numerics/UInt16Extensions.cs b/X10D/src/Numerics/UInt16Extensions.cs
index 4798deb..1cd8c8d 100644
--- a/X10D/src/Numerics/UInt16Extensions.cs
+++ b/X10D/src/Numerics/UInt16Extensions.cs
@@ -1,5 +1,4 @@
 using System.Diagnostics.Contracts;
-using System.Numerics;
 using System.Runtime.CompilerServices;
 
 namespace X10D.Numerics;