diff --git a/scripts/lang_functions.php b/scripts/lang_functions.php
index cd363ee48..38bd83b72 100644
--- a/scripts/lang_functions.php
+++ b/scripts/lang_functions.php
@@ -113,10 +113,17 @@ function add_langs_to_config($langs, $config) {
         $config['languages'] = json_decode( json_encode( $config['languages'] ), true );
         ksort($config['languages']);
         $config['languages'] = json_decode( json_encode( $config['languages'] ), false );
-        file_put_contents(CONFIG, json_encode($config, JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT));
+        save_json(CONFIG, $config);
     }
 }
 
+/**
+ * Save json data.
+ */
+function save_json($path, $content) {
+    file_put_contents($path, str_replace('\/', '/', json_encode($content, JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT))."\n");
+}
+
 function get_langfolder($lang) {
     $folder = LANGPACKSFOLDER.'/'.str_replace('-', '_', $lang);
     if (!is_dir($folder) || !is_file($folder.'/langconfig.php')) {
@@ -271,7 +278,7 @@ function build_lang($lang, $keys) {
 
     // Sort and save.
     ksort($translations);
-    file_put_contents(ASSETSPATH.$lang.'.json', str_replace('\/', '/', json_encode($translations, JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT)));
+    save_json(ASSETSPATH.$lang.'.json', $translations);
 
     $success = count($translations);
     $percentage = floor($success/$total * 100);
@@ -366,7 +373,7 @@ function save_key($key, $value, $filePath) {
     if (!isset($file[$key]) || $file[$key] != $value) {
         $file[$key] = $value;
         ksort($file);
-        file_put_contents($filePath, str_replace('\/', '/', json_encode($file, JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT)));
+        save_json($filePath, $file);
     }
 }
 
diff --git a/scripts/lang_functions.sh b/scripts/lang_functions.sh
index 6b5b4ece3..2dc18ad05 100755
--- a/scripts/lang_functions.sh
+++ b/scripts/lang_functions.sh
@@ -124,6 +124,9 @@ function get_language {
 # Entry function to get all language files.
 function get_languages {
     suffix=$1
+    if [ -z $suffix ]; then
+        suffix=''
+    fi
 
     get_last_version