diff --git a/src/main/java/App.java b/src/main/java/App.java
index a2f0f9f..5f79795 100644
--- a/src/main/java/App.java
+++ b/src/main/java/App.java
@@ -93,9 +93,9 @@ public class App {
 
 		options.addOption(Option.builder("i")
 						  .longOpt("instrument")
-						  .argName("EUR_USD [USD_CAD ...]")
+						  .argName("EUR_USD")
 						  .required(false)
-						  .hasArgs()
+						  .hasArg()
 						  .desc("Live security to stream.  In the format \"EUR_USD\".")
 						  .valueSeparator(',')
 						  .build());