diff --git a/lib/common.js b/lib/common.js
index b811280..f3c5922 100644
--- a/lib/common.js
+++ b/lib/common.js
@@ -97,6 +97,9 @@ exports.isMaintainer = function (user, maintainers) {
 exports.isLocalModule = function (mods) {
   for (var i = 0; i < mods.length; i++) {
     var r = mods[i];
+    if (config.privatePackages.includes(r.name)) {
+      return true;
+    }
     if (r.package && r.package._publish_on_cnpm) {
       return true;
     }
diff --git a/test/lib/common.test.js b/test/lib/common.test.js
index 19ab276..6d71671 100644
--- a/test/lib/common.test.js
+++ b/test/lib/common.test.js
@@ -11,28 +11,50 @@
 
 'use strict';
 
+const { co } = require('co');
+const mm = require('mm');
+const config = require('../../config');
+const createModule = require('../utils').createModule;
+const packageService = require('../../services/package');
 /**
  * Module dependencies.
  */
 
 var common = require('../../lib/common');
 
-describe('test/lib/common.test.js', function () {
-  describe('isAdmin()', function () {
-    it('should admin is admin', function () {
-      common.isAdmin('admin').should.equal(true);
-      common.isAdmin('fengmk2').should.equal(true);
-      common.isAdmin('constructor').should.equal(false);
-      common.isAdmin('toString').should.equal(false);
+describe("test/lib/common.test.js", function () {
+  describe("isAdmin()", function () {
+    it("should admin is admin", function () {
+      common.isAdmin("admin").should.equal(true);
+      common.isAdmin("fengmk2").should.equal(true);
+      common.isAdmin("constructor").should.equal(false);
+      common.isAdmin("toString").should.equal(false);
     });
   });
 
-  describe('getCDNKey()', function () {
-    it('should auto fix scope filename', function () {
-      common.getCDNKey('foo', 'foo-1.0.0.tgz').should.equal('/foo/-/foo-1.0.0.tgz');
-      common.getCDNKey('@bar/foo', 'foo-1.0.0.tgz').should.equal('/@bar/foo/-/@bar/foo-1.0.0.tgz');
-      common.getCDNKey('@bar/foo', '@bar/foo-1.0.0.tgz').should.equal('/@bar/foo/-/@bar/foo-1.0.0.tgz');
-      common.getCDNKey('@bar/foo', '@bar1/foo-1.0.0.tgz').should.equal('/@bar/foo/-/@bar1/foo-1.0.0.tgz');
+  describe("getCDNKey()", function () {
+    it("should auto fix scope filename", function () {
+      common
+        .getCDNKey("foo", "foo-1.0.0.tgz")
+        .should.equal("/foo/-/foo-1.0.0.tgz");
+      common
+        .getCDNKey("@bar/foo", "foo-1.0.0.tgz")
+        .should.equal("/@bar/foo/-/@bar/foo-1.0.0.tgz");
+      common
+        .getCDNKey("@bar/foo", "@bar/foo-1.0.0.tgz")
+        .should.equal("/@bar/foo/-/@bar/foo-1.0.0.tgz");
+      common
+        .getCDNKey("@bar/foo", "@bar1/foo-1.0.0.tgz")
+        .should.equal("/@bar/foo/-/@bar1/foo-1.0.0.tgz");
+    });
+  });
+
+  describe("isLocalModule", function () {
+    it("should ignore private packages", function * () {
+      yield createModule("banana", "1.0.0");
+      const modules = yield packageService.listModulesByName('banana');
+      mm(config, "privatePackages", ["banana"]);
+      common.isLocalModule(modules).should.equal(true);
     });
   });
 });