diff --git a/src/Renci.SshNet/Common/HostKeyEventArgs.cs b/src/Renci.SshNet/Common/HostKeyEventArgs.cs
index 379fb613..fe61a0b5 100644
--- a/src/Renci.SshNet/Common/HostKeyEventArgs.cs
+++ b/src/Renci.SshNet/Common/HostKeyEventArgs.cs
@@ -1,5 +1,4 @@
 using System;
-using System.Security.Cryptography;
 using Renci.SshNet.Security.Cryptography;
 using Renci.SshNet.Security;