1 files changed, 1 insertions, 1 deletions
diff --git a/crypto/src/tls/DtlsClientProtocol.cs b/crypto/src/tls/DtlsClientProtocol.cs
index 72484e178..c1bad2e6f 100644
--- a/crypto/src/tls/DtlsClientProtocol.cs
+++ b/crypto/src/tls/DtlsClientProtocol.cs
@@ -525,7 +525,7 @@ namespace Org.BouncyCastle.Tls
 
 
             ClientHello clientHello = new ClientHello(legacy_version, securityParameters.ClientRandom, session_id,
-                TlsUtilities.EmptyBytes, state.offeredCipherSuites, state.clientExtensions, 0);
+                cookie: TlsUtilities.EmptyBytes, state.offeredCipherSuites, state.clientExtensions, 0);
 
             MemoryStream buf = new MemoryStream();
             clientHello.Encode(state.clientContext, buf);