diff --git a/.idea/misc.xml b/.idea/misc.xml
new file mode 100644
index 00000000..639900d1
--- /dev/null
+++ b/.idea/misc.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
new file mode 100644
index 00000000..fde12639
--- /dev/null
+++ b/.idea/modules.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/cors.iml" filepath="$PROJECT_DIR$/cors.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 00000000..35eb1ddf
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/cors.iml b/cors.iml
new file mode 100644
index 00000000..5a5ced28
--- /dev/null
+++ b/cors.iml
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="WEB_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <excludeFolder url="file://$MODULE_DIR$/.pub" />
+      <excludeFolder url="file://$MODULE_DIR$/build" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" name="Dart SDK" level="project" />
+    <orderEntry type="library" name="Dart Packages" level="project" />
+  </component>
+</module>
\ No newline at end of file
diff --git a/lib/angel_cors.dart b/lib/angel_cors.dart
index fc2619fa..1699a387 100644
--- a/lib/angel_cors.dart
+++ b/lib/angel_cors.dart
@@ -9,13 +9,14 @@ export 'src/cors_options.dart';
 typedef bool CorsFilter(String origin);
 
 bool _isOriginAllowed(String origin, allowedOrigin) {
+  allowedOrigin ??= [];
   if (allowedOrigin is List) {
     return allowedOrigin.any((x) => _isOriginAllowed(origin, x));
   } else if (allowedOrigin is String) {
     return origin == allowedOrigin;
   } else if (allowedOrigin is RegExp) {
-    return allowedOrigin.hasMatch(origin);
-  } else if (allowedOrigin is CorsFilter) {
+    return origin != null && allowedOrigin.hasMatch(origin);
+  } else if (origin != null && allowedOrigin is CorsFilter) {
     return allowedOrigin(origin);
   } else {
     return allowedOrigin != false;
@@ -29,7 +30,7 @@ RequestMiddleware cors([CorsOptions options]) {
   return (RequestContext req, ResponseContext res) async {
     // Access-Control-Allow-Credentials
     if (opts.credentials == true) {
-      res.heades['Access-Control-Allow-Credentials'] = 'true';
+      res.headers['Access-Control-Allow-Credentials'] = 'true';
     }
 
     // Access-Control-Allow-Headers
diff --git a/pubspec.yaml b/pubspec.yaml
index 532102c7..b410aa0b 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -4,7 +4,7 @@ environment:
   sdk: ">=1.19.0"
 homepage: "https://github.com/angel-dart/cors.git"
 name: "angel_cors"
-version: 1.0.0+1
+version: 1.0.0+2
 dependencies: 
   angel_framework: "^1.0.0-dev"
 dev_dependencies: 
diff --git a/test/basic_test.dart b/test/basic_test.dart
index 1604dbff..66c11978 100644
--- a/test/basic_test.dart
+++ b/test/basic_test.dart
@@ -12,7 +12,7 @@ main() {
 
   setUp(() async {
     app = new Angel()
-      ..before.add(cors())
+      ..before.add(cors(new CorsOptions()))
       ..post('/', (req, res) async {
         res.write('hello world');
         return false;
@@ -42,9 +42,8 @@ main() {
   });
 
   test('mirror headers', () async {
-    final response = await client.post(url, headers: {
-      'access-control-request-headers': 'foo'
-    });
+    final response = await client
+        .post(url, headers: {'access-control-request-headers': 'foo'});
     expect(response.statusCode, equals(200));
     print('Response: ${response.body}');
     print('Headers: ${response.headers}');