diff --git a/fixtr/custom-extensions/bar.coffee b/fixtr/custom-extensions/bar.coffee
new file mode 100644
index 0000000..1bb8bf6
--- /dev/null
+++ b/fixtr/custom-extensions/bar.coffee
@@ -0,0 +1 @@
+# empty
diff --git a/fixtr/custom-extensions/foo.jsx b/fixtr/custom-extensions/foo.jsx
new file mode 100644
index 0000000..8b1a393
--- /dev/null
+++ b/fixtr/custom-extensions/foo.jsx
@@ -0,0 +1 @@
+// empty
diff --git a/index.js b/index.js
index 6d51e38..2cf9458 100644
--- a/index.js
+++ b/index.js
@@ -257,7 +257,7 @@ function handlePaths(files, excludePatterns, globOptions) {
 		})
 		.then(flatten)
 		.filter(function (file) {
-			return file && path.extname(file) === '.js' && path.basename(file)[0] !== '_';
+			return file && path.basename(file)[0] !== '_';
 		})
 		.map(function (file) {
 			return path.resolve(file);
diff --git a/test.js b/test.js
index b81f040..d12ded6 100644
--- a/test.js
+++ b/test.js
@@ -139,3 +139,21 @@ test('findFiles - finds the correct files by default', async t => {
 	files.sort();
 	t.deepEqual(files, expected);
 });
+
+test('findFiles - finds the correct files with custom extensions', async t => {
+	const fixtureDir = fixture('custom-extensions');
+	const avaFiles = new AvaFiles({
+		files: ['**/*.{coffee,jsx}'],
+		cwd: fixtureDir
+	});
+
+	const files = await avaFiles.findTestFiles();
+	const expected = [
+		'bar.coffee',
+		'foo.jsx'
+	].map(function (file) {
+		return path.join(fixtureDir, file);
+	});
+
+	t.deepEqual(files, expected);
+});