diff --git a/README.md b/README.md
index faf35c1..bd7fc03 100644
--- a/README.md
+++ b/README.md
@@ -339,8 +339,8 @@ const envVarFormat = vars =>
 ```js
 const envVarFormat = (vars) => {
   let _ = Object.keys(vars);
-    .map(var => `${var}=${vars[var]}`);
-    .join(' ');
+  _ = _.map(var => `${var}=${vars[var]}`);
+  _ = _.join(' ');
   return chalk.dim(_, 'node', args.join(' '));
 }
 ```