diff --git a/src/lib/get-custom-properties-from-root.js b/src/lib/get-custom-properties-from-root.js
index c5ef301..985955a 100644
--- a/src/lib/get-custom-properties-from-root.js
+++ b/src/lib/get-custom-properties-from-root.js
@@ -9,7 +9,7 @@ export default async function getCustomPropertiesFromRoot(root, resolver) {
 	let customProperties = {};
 
 	// resolve current file directory
-	let sourceDir = __dirname;
+	let sourceDir = process.cwd();
 	if (root.source && root.source.input && root.source.input.file) {
 		sourceDir = path.dirname(root.source.input.file);
 	}