diff --git a/index.js b/index.js
index b1ed4a1..ee570f0 100644
--- a/index.js
+++ b/index.js
@@ -41,9 +41,11 @@ const checkCwdOption = options => {
 
 const normalizeOptions = (options = {}) => {
 	options = {
-		ignore: [],
-		expandDirectories: true,
 		...options,
+		ignore: options.ignore || [],
+		expandDirectories: options.expandDirectories === undefined
+			? true
+			: options.expandDirectories,
 		cwd: toPath(options.cwd),
 	};