diff --git a/lib/util.js b/lib/util.js
index 489a684..01cdccb 100644
--- a/lib/util.js
+++ b/lib/util.js
@@ -260,10 +260,18 @@ function getCodepage() {
   if (_linux || _darwin || _freebsd || _openbsd) {
     if (!codepage) {
       try {
-        const stdout = execSync('echo $LANG');
-        const lines = stdout.toString().split('\r\n');
-        const parts = lines[0].split('.');
-        codepage = parts.length > 1 ? parts[1].trim() : '';
+        const stdout = execSync('locale charmap');
+        let lines = stdout.toString().split('\r\n');
+        codepage = lines[0].trim();
+        if (!codepage) {
+          const stdout = execSync('echo $LANG');
+          lines = stdout.toString().split('\r\n');
+          const parts = lines[0].split('.');
+          codepage = parts.length > 1 ? parts[1].trim() : '';
+          if (!codepage) {
+            codepage = 'UTF-8';
+          }
+        }
       } catch (err) {
         codepage = 'UTF-8';
       }