diff --git a/RpcClient.js b/RpcClient.js
index f9d5b1b..631c089 100644
--- a/RpcClient.js
+++ b/RpcClient.js
@@ -89,7 +89,7 @@ function ClassSpec(b) {
     validateAddress: '',
     verifyMessage: '',
     walletLock: '',
-    walletPassphrase: 'string int',
+    walletPassPhrase: 'string int',
     walletPassphraseChange: '',
   };