diff --git a/base/tools/extract_locales.js b/base/tools/extract_locales.js
index e4a7aab8..108afb8d 100644
--- a/base/tools/extract_locales.js
+++ b/base/tools/extract_locales.js
@@ -1,14 +1,13 @@
 // Extracts localizable strings from a set of source files and writes them to JSON files.
 // This script can create new translations or update existing ones.
 // Usage:
-// `export ARM_LOCALE=<locale code>`
-// `../../armorcore/make --js extract_locales.js`
+// `../../armorcore/make --js extract_locales.js <locale code>`
 // Generates a `base/assets/locale/<locale code>.json` file
 
-let locale = std.getenv("ARM_LOCALE");
+let locale = scriptArgs[4];
 
 if (!locale) {
-    console.log("ARM_LOCALE env variable not set!");
+    console.log("Locale code not set!");
     std.exit();
 }
 
diff --git a/readme.md b/readme.md
index 4ff498cc..edaabf26 100644
--- a/readme.md
+++ b/readme.md
@@ -10,8 +10,7 @@ armortools
 
 **Generating a locale file**
 ```bash
-export ARM_LOCALE=<locale code>
-./armorcore/make --js base/tools/extract_locales.js
+./armorcore/make --js base/tools/extract_locales.js <locale code>
 # Generates a `base/assets/locale/<locale code>.json` file
 ```