diff --git a/test/unit/create_routes/index.js b/test/unit/create_routes/index.js
index acc7a7a..1478800 100644
--- a/test/unit/create_routes/index.js
+++ b/test/unit/create_routes/index.js
@@ -154,6 +154,6 @@ describe('create_routes', () => {
 	it('errors when trying to use reserved characters in route regexp', () => {
 		assert.throws(() => {
 			create_routes(path.join(__dirname, 'samples/invalid-qualifier'));
-		}, /Invalid route \[foo\(\[a-z\]\[0-9\]\?\)\].js — cannot use \(, \), \? or \: in route qualifiers/);
+		}, /Invalid route \[foo\(\[a-z\]\(\[0-9\]\)\)\].js — cannot use \(, \), \? or \: in route qualifiers/);
 	});
 });
\ No newline at end of file
diff --git a/test/unit/create_routes/samples/invalid-qualifier/[foo([a-z][0-9]?)].js b/test/unit/create_routes/samples/invalid-qualifier/[foo([a-z]([0-9]))].js
similarity index 100%
rename from test/unit/create_routes/samples/invalid-qualifier/[foo([a-z][0-9]?)].js
rename to test/unit/create_routes/samples/invalid-qualifier/[foo([a-z]([0-9]))].js