diff --git a/README.md b/README.md
index 85bad65e..69a89b78 100644
--- a/README.md
+++ b/README.md
@@ -20,6 +20,8 @@ Install [Node.js](https://nodejs.org/en/)
 
 Install all dependencies by [npm](https://www.npmjs.com/) : `npm install`
 
+Make sure to checkout languages SDKs repositories above and update `version_path.json` to match the base paths.
+
 ## Codegen SDK
 
 ```bash
diff --git a/lib/common/Utils.js b/lib/common/Utils.js
index 3720f39f..0e75e729 100644
--- a/lib/common/Utils.js
+++ b/lib/common/Utils.js
@@ -31,8 +31,7 @@ const Utils = {
   },
 
   validateLanguage(language) {
-    // @fb-only
-    'java', 'nodejs', 'php', 'python', 'ruby'];
+    const supportedLanguages = ['java', 'nodejs', 'php', 'python', 'ruby'];
     if (!language) {
       this.throwUsageError('language is not specified! available languages: ' + supportedLanguages.join(', '));
     }
diff --git a/lib/processors/CodeGenLanguages.js b/lib/processors/CodeGenLanguages.js
index 66d1b7f8..43cb09a6 100644
--- a/lib/processors/CodeGenLanguages.js
+++ b/lib/processors/CodeGenLanguages.js
@@ -51,8 +51,7 @@ const generateFieldEnumReferences = (APISpecs, enumMetadataMap) => {
       }
     }
   }
-// @fb-only
-
+}
 
 const CodeGenLanguages = {
   // @fb-only