diff --git a/README.md b/README.md
index aa6e07b..79ab226 100644
--- a/README.md
+++ b/README.md
@@ -86,7 +86,7 @@ $ btcd --testnet -u rpcuser -P rpcpass
 
 ```bash
 $ mkdir ~/.btcwallet/
-$ cp ~/.btcd/rpc.cert ~/.btcwallet/cert.pem
+$ cp ~/.btcd/rpc.cert ~/.btcwallet/btcd.cert
 ```
 
 - Run the following command to start btcwallet:
diff --git a/config.go b/config.go
index dfd916f..a41791f 100644
--- a/config.go
+++ b/config.go
@@ -28,7 +28,7 @@ import (
 )
 
 const (
-	defaultCAFilename     = "cert.pem"
+	defaultCAFilename     = "btcd.cert"
 	defaultConfigFilename = "btcwallet.conf"
 	defaultDataDirname    = "data"
 	defaultBtcNet         = btcwire.TestNet3