diff --git a/README.md b/README.md
index bc8063d..6f71ebf 100644
--- a/README.md
+++ b/README.md
@@ -9,10 +9,10 @@ The utility supports `show` and `set` commands:
 ```bash
 
 ~ $ wasm-module-name show test.wasm
-The module name <no-name>
+The module name is <no-name>
 
 ~ $ wasm-module-name set test.wasm test
 
 ~ $ wasm-module-name show test.wasm
-The module name test
+The module name is test
 ```
diff --git a/src/main.rs b/src/main.rs
index e47430c..43cc007 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -16,12 +16,12 @@
 
 //#![warn(missing_docs)]
 
-// TODO: replace unwrap with more nady error
+// TODO: replace unwrap with more handy error
 // TODO: add some docs
 
 use parity_wasm;
 use parity_wasm::elements::{NameSection, ModuleNameSubsection, Serialize};
-use clap::{App, Arg, SubCommand};
+use clap::{App, AppSettings, Arg, SubCommand};
 use exitfailure::ExitFailure;
 use failure::err_msg;
 
@@ -66,6 +66,7 @@ fn main() -> Result<(), ExitFailure> {
         .version(VERSION)
         .author(AUTHORS)
         .about(DESCRIPTION)
+        .setting(AppSettings::ArgRequiredElseHelp)
         .subcommand(show_module_name_subcommand())
         .subcommand(set_module_name_subcommand());
 
@@ -89,7 +90,7 @@ fn main() -> Result<(), ExitFailure> {
                 None => no_module_name,
             };
 
-            println!("The module name {}", module_name);
+            println!("The module name is {}", module_name);
             Ok(())
         },