diff --git a/lib/core/index.js b/lib/core/index.js
index d41cd71..a5549da 100755
--- a/lib/core/index.js
+++ b/lib/core/index.js
@@ -28,7 +28,7 @@ function dashesCamelCase (str: string) {
 export const getFilePath = (context, styleFilePath) => {
   const settings = context.settings['css-modules'];
 
-  const dirName = path.dirname(context.getFilename());
+  const dirName = path.dirname(context.filename ?? context.getFilename());
   const basePath = (settings && settings.basePath) ? settings.basePath : '';
 
   return styleFilePath.startsWith('.')