diff --git a/css-modules-require-hook/css-modules-require-hook-tests.ts b/css-modules-require-hook/css-modules-require-hook-tests.ts
index ea80474dc5..93da1326bd 100644
--- a/css-modules-require-hook/css-modules-require-hook-tests.ts
+++ b/css-modules-require-hook/css-modules-require-hook-tests.ts
@@ -62,7 +62,7 @@ hook({ extensions: ['.scss', '.sass'] });
 
 hook({ ignore: (file: string) => false });
 hook({ ignore: 'unused' });
-hook({ ignore: /\.test\.(css|scss|sass)/$ });
+hook({ ignore: /\.test\.(css|scss|sass)$/ });
 
 //
 // https://github.com/css-modules/css-modules-require-hook/blob/master/README.md#preprocesscss-function