diff --git a/NzbDrone.Host/Owin/OwinHostController.cs b/NzbDrone.Host/Owin/OwinHostController.cs
index 8eabe82b5..c11c0f99d 100644
--- a/NzbDrone.Host/Owin/OwinHostController.cs
+++ b/NzbDrone.Host/Owin/OwinHostController.cs
@@ -60,17 +60,18 @@ namespace NzbDrone.Host.Owin
             {
                 if (ex.InnerException == null)
                 {
-                    throw ex;
+                    throw;
                 }
 
-                if (ex.InnerException as HttpListenerException == null)
+                if (ex.InnerException is HttpListenerException)
                 {
-                    throw ex;
+                    throw new PortInUseException("Port {0} is already in use, please ensure NzbDrone is not already running.",
+                             ex,
+                             _configFileProvider.Port);
                 }
 
-                throw new PortInUseException("Port {0} is already in use, please ensure NzbDrone is not already running.",
-                                             ex,
-                                             _configFileProvider.Port);
+                throw ex.InnerException;
+
             }
         }
 
diff --git a/UI/Handlebars/Helpers/Series.js b/UI/Handlebars/Helpers/Series.js
index fe9b3fa89..f9d849325 100644
--- a/UI/Handlebars/Helpers/Series.js
+++ b/UI/Handlebars/Helpers/Series.js
@@ -64,7 +64,7 @@ define(
         });
 
         Handlebars.registerHelper('titleWithYear', function () {
-            if (this.title.match(/\s\(\d{4}\)$/)) {
+            if (this.title.endsWith(' ({0})'.format(this.year))) {
                 return this.title;
             }
 
diff --git a/UI/Mixins/backbone.ajax.js b/UI/Mixins/backbone.ajax.js
index 5bfbe6d13..0544b2e28 100644
--- a/UI/Mixins/backbone.ajax.js
+++ b/UI/Mixins/backbone.ajax.js
@@ -11,7 +11,7 @@ define(function () {
 
             //check if ajax call was made with data option
             if (xhr && xhr.data && xhr.type === 'DELETE') {
-                if (xhr.url.indexOf('?') === -1) {
+                if (!xhr.url.contains('?')) {
                     xhr.url = xhr.url + '?' + $.param(xhr.data);
                 }
                 else {
diff --git a/UI/Shared/StringHelpers.js b/UI/Shared/StringHelpers.js
deleted file mode 100644
index e5fafb55a..000000000
--- a/UI/Shared/StringHelpers.js
+++ /dev/null
@@ -1,33 +0,0 @@
-'use strict';
-
-define(
-    [
-    ], function () {
-
-        return {
-
-            startsWith: function (str, starts) {
-                if (starts === '') {
-                    return true;
-                }
-                if (str == null || starts == null) {
-                    return false;
-                }
-                str = String(str);
-                starts = String(starts);
-                return str.length >= starts.length && str.slice(0, starts.length) === starts;
-            },
-
-            endsWith: function (str, ends) {
-                if (ends === '') {
-                    return true;
-                }
-                if (str == null || ends == null) {
-                    return false;
-                }
-                str = String(str);
-                ends = String(ends);
-                return str.length >= ends.length && str.slice(str.length - ends.length) === ends;
-            }
-        }
-    });
diff --git a/UI/index.html b/UI/index.html
index 5a4659fa5..5ffff693e 100644
--- a/UI/index.html
+++ b/UI/index.html
@@ -60,6 +60,7 @@
     </div>
 </footer>
 </body>
+<script src="/polyfills.js"></script>
 <script src="/JsLibraries/jquery.js"></script>
 <script src="/JsLibraries/messenger.js"></script>
 <script src="/ServerStatus.js"></script>
diff --git a/UI/jQuery/RouteBinder.js b/UI/jQuery/RouteBinder.js
index 7b599cc88..70ffc8742 100644
--- a/UI/jQuery/RouteBinder.js
+++ b/UI/jQuery/RouteBinder.js
@@ -1,5 +1,5 @@
 'use strict';
-define(['Shared/StringHelpers'],function (StringHelpers) {
+define(function () {
     //This module will automatically route all relative links through backbone router rather than
     //causing links to reload pages.
 
@@ -40,7 +40,7 @@ define(['Shared/StringHelpers'],function (StringHelpers) {
             }
 
 
-            if (!StringHelpers.startsWith(href, 'http')) {
+            if (!href.startsWith('http')) {
                 router.navigate(href, { trigger: true });
             }
 
diff --git a/UI/polyfills.js b/UI/polyfills.js
new file mode 100644
index 000000000..3e6797bf8
--- /dev/null
+++ b/UI/polyfills.js
@@ -0,0 +1,32 @@
+if (!String.prototype.startsWith) {
+    Object.defineProperty(String.prototype, 'startsWith', {
+        enumerable: false,
+        configurable: false,
+        writable: false,
+        value: function (searchString, position) {
+            position = position || 0;
+            return this.indexOf(searchString, position) === position;
+        }
+    });
+}
+
+if (!String.prototype.endsWith) {
+    Object.defineProperty(String.prototype, 'endsWith', {
+        enumerable: false,
+        configurable: false,
+        writable: false,
+        value: function (searchString, position) {
+            position = position || this.length;
+            position = position - searchString.length;
+            var lastIndex = this.lastIndexOf(searchString);
+            return lastIndex !== -1 && lastIndex === position;
+        }
+    });
+}
+
+if(!('contains' in String.prototype))
+{
+    String.prototype.contains = function(str, startIndex) {
+        return -1 !== String.prototype.indexOf.call(this, str, startIndex);
+    };
+}
\ No newline at end of file