diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-submarine/src/main/java/org/apache/hadoop/yarn/submarine/client/cli/Cli.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-submarine/src/main/java/org/apache/hadoop/yarn/submarine/client/cli/Cli.java
index 69189f40389..1106b2e1419 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-submarine/src/main/java/org/apache/hadoop/yarn/submarine/client/cli/Cli.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-submarine/src/main/java/org/apache/hadoop/yarn/submarine/client/cli/Cli.java
@@ -97,7 +97,7 @@ public class Cli {
       }
     } else {
       printHelp();
-      throw new IllegalArgumentException("Bad parameters <TODO>");
+      throw new IllegalArgumentException("Unrecognized option: " + args[0]);
     }
   }
 }