diff --git a/quic/transport/ngtcp2/native/keys.nim b/quic/transport/ngtcp2/native/keys.nim
index 79aa668..c7ac05b 100644
--- a/quic/transport/ngtcp2/native/keys.nim
+++ b/quic/transport/ngtcp2/native/keys.nim
@@ -31,7 +31,6 @@ proc dummySecret: Secret =
 proc install0RttKey*(connection: ptr ngtcp2_conn) =
   var context = dummyCryptoContext()
   connection.ngtcp2_conn_set_initial_crypto_ctx(unsafeAddr context)
-  connection.ngtcp2_conn_set_crypto_ctx(unsafeAddr context)
 
   let key = dummyKey()
   doAssert 0 == connection.ngtcp2_conn_install_initial_key(
@@ -46,7 +45,6 @@ proc install0RttKey*(connection: ptr ngtcp2_conn) =
 
 proc installHandshakeKeys*(connection: ptr ngtcp2_conn) =
   var context = dummyCryptoContext()
-  ngtcp2_conn_set_initial_crypto_ctx(connection, unsafeAddr context);
   connection.ngtcp2_conn_set_crypto_ctx(unsafeAddr context)
   var rx, tx = dummyKey()
   doAssert 0 == ngtcp2_conn_install_rx_handshake_key(
@@ -65,10 +63,8 @@ proc installHandshakeKeys*(connection: ptr ngtcp2_conn) =
   )
 
 proc install1RttKeys*(connection: ptr ngtcp2_conn) =
-  #ngtcp2_conn_set_aead_overhead(connection, aeadlen)
   var context = dummyCryptoContext()
   ngtcp2_conn_set_initial_crypto_ctx(connection, unsafeAddr context);
-  connection.ngtcp2_conn_set_crypto_ctx(unsafeAddr context)
   let secret = dummySecret()
   let rx, tx = dummyKey()
   doAssert 0 == ngtcp2_conn_install_rx_key(