1 files changed, 5 insertions, 1 deletions
diff --git a/crypto/src/asn1/BerOctetString.cs b/crypto/src/asn1/BerOctetString.cs
index 1a8f761a4..b092d8fb2 100644
--- a/crypto/src/asn1/BerOctetString.cs
+++ b/crypto/src/asn1/BerOctetString.cs
@@ -1,7 +1,6 @@
 using System;
 using System.Collections;
 using System.Diagnostics;
-using System.IO;
 
 using Org.BouncyCastle.Utilities;
 
@@ -121,6 +120,11 @@ namespace Org.BouncyCastle.Asn1
 			return GetEnumerator();
 		}
 
+        internal override int EncodedLength(bool withID)
+        {
+            throw Platform.CreateNotImplementedException("BerOctetString.EncodedLength");
+        }
+
         internal override void Encode(Asn1OutputStream asn1Out, bool withID)
         {
             if (asn1Out.IsBer)