diff --git a/snippets/copyright/index.js b/snippets/copyright/index.js
index 655b6bd..fecd968 100644
--- a/snippets/copyright/index.js
+++ b/snippets/copyright/index.js
@@ -6,7 +6,6 @@
  */
 
 
-
 /* eslint-disable no-sync */
 /* eslint-disable no-console */
 /* eslint-disable no-await-in-loop */
@@ -86,10 +85,13 @@ async function fix_all_copy (folder, license = '', software = '') {
   const regex = /\/\*\s+\*\sCopyright[\s\S]*?\*\/\n{0,2}/gu;
   await map_all_files (folder, (data, filename) => {
     const shebang = /^#!.*?\n\n/gu;
-    const shebang_line = shebang.exec(data);
-    if (!/\.js$/.test(filename) && !regex.test (data))
+    const shebang_line = shebang.exec (data);
+    if (!(/\.js$/u).test (filename) && !regex.test (data))
       return null;
-    return (shebang_line ? shebang_line[0] : '') + get_copyright_notice (license, software) + data.replace (regex, '').replace(shebang, '');
+    return (shebang_line ? shebang_line[0] : '')
+     + get_copyright_notice (license, software)
+     + data.replace (regex, '')
+       .replace (shebang, '');
   });
 }