diff --git a/consensusj-jsonrpc-cli/src/main/java/org/consensusj/jsonrpc/cli/BaseJsonRpcTool.java b/consensusj-jsonrpc-cli/src/main/java/org/consensusj/jsonrpc/cli/BaseJsonRpcTool.java
index d894c0e8b..efb68569d 100644
--- a/consensusj-jsonrpc-cli/src/main/java/org/consensusj/jsonrpc/cli/BaseJsonRpcTool.java
+++ b/consensusj-jsonrpc-cli/src/main/java/org/consensusj/jsonrpc/cli/BaseJsonRpcTool.java
@@ -73,7 +73,7 @@ public void run(Call call) {
     
     public void run(CommonsCLICall call) {
         List<String> args = call.line.getArgList();
-        if (args.size() == 0) {
+        if (args.isEmpty()) {
             printError(call, "jsonrpc method required");
             printHelp(call, usage);
             throw new ToolException(1, "jsonrpc method required");