diff --git a/lib/wallet/rpc.js b/lib/wallet/rpc.js
index d07bc363..388b9bba 100644
--- a/lib/wallet/rpc.js
+++ b/lib/wallet/rpc.js
@@ -204,8 +204,8 @@ RPC.prototype.resendWalletTransactions = co(function* resendWalletTransactions(a
 
 RPC.prototype.addMultisigAddress = co(function* addMultisigAddress(args, help) {
   if (help || args.length < 2 || args.length > 3) {
-    throw new RPCError(errs.MISC_ERROR, 'addmultisigaddress'
-      + ' nrequired ["key",...] ( "account" )');
+    throw new RPCError(errs.MISC_ERROR,
+      'addmultisigaddress nrequired ["key",...] ( "account" )');
   }
 
   // Impossible to implement in bcoin (no address book).