diff --git a/Lidgren.Network/Platform/PlatformAndroid.cs b/Lidgren.Network/Platform/PlatformAndroid.cs
index e8d378f..0bd8d7e 100644
--- a/Lidgren.Network/Platform/PlatformAndroid.cs
+++ b/Lidgren.Network/Platform/PlatformAndroid.cs
@@ -1,6 +1,7 @@
 #if __ANDROID__
 using System;
 using System.Collections.Generic;
+using System.Security.Cryptography;
 using System.Net;
 
 namespace Lidgren.Network