diff --git a/lib/RpcClient.js b/lib/RpcClient.js
index 8ba7445fba5..fa0bfd68eff 100644
--- a/lib/RpcClient.js
+++ b/lib/RpcClient.js
@@ -46,6 +46,7 @@ var callspec = {
   getBlockHash: 'int',
   getBlockNumber: '',
   getBlockTemplate: '',
+  getCoinSupply: '',
   getConnectionCount: '',
   getDifficulty: '',
   getGenerate: '',