diff --git a/package.json b/package.json
index 895c540..207b5ce 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@leosilvadev/avrodoc-plus",
   "description": "Documentation tool for Avro schemas. Forked from https://github.com/ckatzorke/avrodoc.",
-  "version": "0.5.0",
+  "version": "0.5.1",
   "author": "Leonardo Silva https://github.com/leosilvadev",
   "bin": "./bin/avrodoc-plus",
   "scripts": {
diff --git a/src/cli.js b/src/cli.js
index 595e896..7305bb9 100644
--- a/src/cli.js
+++ b/src/cli.js
@@ -38,7 +38,7 @@ const extra_less_files = argv.style ? [argv.style] : [];
 
 //valid input?
 if (!inputFiles || inputFiles.length === 0 || outputFile === null) {
-    sys.error('Usage: avrodoc [-i rootfolder] [my-schema.avsc [another-schema.avsc...]] [-o=my-documentation.html]');
+    sys.error('Usage: avrodoc [-i rootfolder] [my-schema.avsc [another-schema.avsc...]] [-o=my-documentation.html] [-s=my-style.less]');
     process.exit(1);
 }
 avrodoc.createAvroDoc(extra_less_files, inputFiles, outputFile);