diff --git a/lib/mods.js b/lib/mods.js
index 1807d1c..b49b519 100644
--- a/lib/mods.js
+++ b/lib/mods.js
@@ -44,7 +44,8 @@ module.exports = function getMods(dirpath, opt) {
     var properties = name.replace('.js', '')
     .split('/')
     .map(function(property) {
-      var reg = /^[a-z][a-z0-9_-]*$/ig;
+      // want support dao/User.sqlmap.js;
+      var reg = /^[a-z][a-z\.0-9_-]*$/ig;
       if (!reg.test(property)) {
         throw new Error(property + ' is not match ' + reg + ' in ' + name);
       }
diff --git a/test/fixtures/services/dot.dir/a.js b/test/fixtures/services/dot.dir/a.js
new file mode 100644
index 0000000..a56b911
--- /dev/null
+++ b/test/fixtures/services/dot.dir/a.js
@@ -0,0 +1,6 @@
+module.exports = function (app) {
+  return {
+    load: true,
+    app: app
+  };
+};
diff --git a/test/fixtures/error/dotdir/dot.dir/a.js b/test/fixtures/services/dot.file.js
similarity index 100%
rename from test/fixtures/error/dotdir/dot.dir/a.js
rename to test/fixtures/services/dot.file.js
diff --git a/test/loading.test.js b/test/loading.test.js
index 3477f82..d705d78 100644
--- a/test/loading.test.js
+++ b/test/loading.test.js
@@ -27,7 +27,7 @@ describe('loading.test.js', function () {
     loading(path.join(__dirname, 'fixtures', 'services')).into(app, 'services');
 
     app.should.have.property('services');
-    app.services.should.have.keys('dir', 'foo', 'fooBarHello', 'fooService', 'hyphenDir', 'underscoreDir', 'userProfile');
+    app.services.should.have.keys('dir', 'foo', 'fooBarHello', 'fooService', 'hyphenDir', 'underscoreDir', 'userProfile', 'dot.dir', 'dot.file');
     app.services.fooService.should.have.keys('a');
 
     done = pedding(2, done);
diff --git a/test/mods.test.js b/test/mods.test.js
index 691add1..0c96513 100644
--- a/test/mods.test.js
+++ b/test/mods.test.js
@@ -10,7 +10,7 @@ describe('mods.test.js', function() {
   it('should get mods', function() {
     var dir = join(fixtures, 'services');
     var sortFn = function(x, y){
-      return x.fullpath < y.fullpath;
+      return x.fullpath < y.fullpath ? 1 : -1;
     };
     var mods = getMods(dir).sort(sortFn);
     mods.should.eql([{
@@ -40,28 +40,35 @@ describe('mods.test.js', function() {
     }, {
       fullpath: dir + '/userProfile.js',
       properties: ['userProfile']
+    }, {
+      fullpath: dir + '/dot.file.js',
+      properties: ['dot.file']
+    }, {
+      fullpath: dir + '/dot.dir/a.js',
+      properties: ['dot.dir', 'a']
     }].sort(sortFn));
   });
 
-  it('should throw when directory contains dot', function() {
-    (function() {
-      getMods(join(fixtures, 'error/dotdir'));
-    }).should.throw('dot.dir is not match /^[a-z][a-z0-9_-]*$/gi in dot.dir/a.js');
-  });
+  // when support dot file, this case will remove;
+  // it('should throw when directory contains dot', function() {
+  //   (function() {
+  //     getMods(join(fixtures, 'error/dotdir'));
+  //   }).should.throw('dot.dir is not match /^[a-z][a-z0-9_-]*$/gi in dot.dir/a.js');
+  // });
 
   it('should throw when directory starts with underscore', function() {
     (function() {
       getMods(join(fixtures, 'error/underscore-dir'));
-    }).should.throw('_underscore is not match /^[a-z][a-z0-9_-]*$/gi in _underscore/a.js');
+    }).should.throw('_underscore is not match /^[a-z][a-z\\.0-9_-]*$/gi in _underscore/a.js');
     (function() {
       getMods(join(fixtures, 'error/underscore-file-in-dir'));
-    }).should.throw('_a is not match /^[a-z][a-z0-9_-]*$/gi in dir/_a.js');
+    }).should.throw('_a is not match /^[a-z][a-z\\.0-9_-]*$/gi in dir/_a.js');
   });
 
   it('should throw when file starts with underscore', function() {
     (function() {
       getMods(join(fixtures, 'error/underscore-file'));
-    }).should.throw('_private is not match /^[a-z][a-z0-9_-]*$/gi in _private.js');
+    }).should.throw('_private is not match /^[a-z][a-z\\.0-9_-]*$/gi in _private.js');
   });
 
 });