diff --git a/src/Main.js b/src/Main.js
index 44235be0bc..1385e2791b 100644
--- a/src/Main.js
+++ b/src/Main.js
@@ -11,6 +11,7 @@ var metrics = require('./Metrics');
 var router = require('./Router');
 var template = require('./MenuTemplate');
 var webUtil = require('./WebUtil');
+var util = require ('./Util');
 
 webUtil.addWindowSizeSaving();
 webUtil.addLiveReload();
@@ -34,7 +35,6 @@ ipc.on('application:quitting', opts => {
 });
 
 ipc.on('application:open-url', opts => {
-  var repoRegexp = /[a-z0-9]+(?:[._-][a-z0-9]+)*/;
   var parser = document.createElement('a');
   parser.href = opts.url;
 
@@ -49,7 +49,7 @@ ipc.on('application:open-url', opts => {
   var repo = tokens.slice(2).join('/');
 
   // Only accept official repos for now
-  if (repo.indexOf('/') !== -1 || !repoRegexp.test(repo)) {
+  if (repo.indexOf('/') !== -1 || !util.isOfficialRepo(repo)) {
     return;
   }
 
diff --git a/src/Util-test.js b/src/Util-test.js
new file mode 100644
index 0000000000..f4a0582195
--- /dev/null
+++ b/src/Util-test.js
@@ -0,0 +1,24 @@
+jest.dontMock('./Util');
+var util = require('./Util');
+
+describe('Util', function () {
+  it('accepts official repo', () => {
+    expect(util.isOfficialRepo('redis')).toBe(true);
+  });
+
+  it('rejects falsy value as official repo', () => {
+    expect(util.isOfficialRepo(undefined)).toBe(false);
+  });
+
+  it('rejects empty repo name', () => {
+    expect(util.isOfficialRepo('')).toBe(false);
+  });
+
+  it('rejects repo with non official namespace', () => {
+    expect(util.isOfficialRepo('kitematic/html')).toBe(false);
+  });
+
+  it('rejects repo with a different registry address', () => {
+    expect(util.isOfficialRepo('www.myregistry.com/kitematic/html')).toBe(false);
+  });
+});
diff --git a/src/Util.js b/src/Util.js
index a9ab1b2e0d..54df0d2fcf 100644
--- a/src/Util.js
+++ b/src/Util.js
@@ -44,5 +44,12 @@ module.exports = {
     } catch (err) {}
     return settingsjson;
   },
+  isOfficialRepo: function (name) {
+    if (!name || !name.length) {
+      return false;
+    }
+    var repoRegexp = /^[a-z0-9]+(?:[._-][a-z0-9]+)*$/;
+    return repoRegexp.test(name);
+  },
   webPorts: ['80', '8000', '8080', '3000', '5000', '2368', '9200', '8983']
 };