diff --git a/CHANGELOG b/CHANGELOG
index 6c46b5ec9..5e04cf5f5 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,7 @@
+mkdocs-material-1.6.4 (2017-05-24)
+
+  * Fixed #337: JavaScript error for GitHub organization URLs
+
 mkdocs-material-1.6.3 (2017-05-16)
 
   * Fixed #329: Broken source stats for private or unknown GitHub repos
diff --git a/docs/getting-started.md b/docs/getting-started.md
index 41d8b1468..91fe58877 100644
--- a/docs/getting-started.md
+++ b/docs/getting-started.md
@@ -360,6 +360,11 @@ extra:
 A new entry at the bottom of the table of contents is generated that is linking
 to the comments section. The necessary JavaScript is automatically included.
 
+!!! warning "Requirements"
+
+    `site_url` value must be set in `mkdocs.yml` for the Discus integration to
+    load properly.
+
   [17]: https://disqus.com
 
 ### Localization
diff --git a/docs/release-notes.md b/docs/release-notes.md
index b5a6e56f1..c03feafba 100644
--- a/docs/release-notes.md
+++ b/docs/release-notes.md
@@ -12,11 +12,17 @@ To determine the currently installed version, use the following command:
 
 ``` sh
 pip show mkdocs-material | grep -E ^Version
-# Version 1.6.3
+# Version 1.6.4
 ```
 
 ## Changelog
 
+### 1.6.4 <small> _ May 24, 2017</small>
+
+* Fixed [#337][337]: JavaScript error for GitHub organization URLs
+
+  [337]: https://github.com/squidfunk/mkdocs-material/issues/337
+
 ### 1.6.3 <small> _ May 16, 2017</small>
 
 * Fixed [#329][329]: Broken source stats for private or unknown GitHub repos
diff --git a/material/assets/javascripts/application-1a4408fe3b.js b/material/assets/javascripts/application-3f3f3473e5.js
similarity index 97%
rename from material/assets/javascripts/application-1a4408fe3b.js
rename to material/assets/javascripts/application-3f3f3473e5.js
index 328135114..ae235304a 100644
--- a/material/assets/javascripts/application-1a4408fe3b.js
+++ b/material/assets/javascripts/application-3f3f3473e5.js
@@ -1,4 +1,4 @@
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h=0;h<this.metadataWhitelist.length;h++){var d=this.metadataWhitelist[h],p=u.metadata[d];void 0==this.invertedIndex[u][i][t][d]&&(this.invertedIndex[u][i][t][d]=[]),this.invertedIndex[u][i][t][d].push(p)}}}},o.Builder.prototype.calculateAverageDocumentLengths=function(){for(var e=Object.keys(this.documentLengths),t=e.length,n=0,r=0;r<t;r++){var i=e[r];n+=this.documentLengths[i]}this.averageDocumentLength=n/t},o.Builder.prototype.createDocumentVectors=function(){for(var e={},t=Object.keys(this.documentTermFrequencies),n=t.length,r=0;r<n;r++){for(var i=t[r],a=this.documentLengths[i],s=new o.Vector,c=this.documentTermFrequencies[i],u=Object.keys(c),l=u.length,f=0;f<l;f++){var 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h=0;h<this.metadataWhitelist.length;h++){var d=this.metadataWhitelist[h],p=u.metadata[d];void 0==this.invertedIndex[u][i][t][d]&&(this.invertedIndex[u][i][t][d]=[]),this.invertedIndex[u][i][t][d].push(p)}}}},o.Builder.prototype.calculateAverageDocumentLengths=function(){for(var e=Object.keys(this.documentLengths),t=e.length,n=0,r=0;r<t;r++){var i=e[r];n+=this.documentLengths[i]}this.averageDocumentLength=n/t},o.Builder.prototype.createDocumentVectors=function(){for(var e={},t=Object.keys(this.documentTermFrequencies),n=t.length,r=0;r<n;r++){for(var i=t[r],a=this.documentLengths[i],s=new o.Vector,c=this.documentTermFrequencies[i],u=Object.keys(c),l=u.length,f=0;f<l;f++){var 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strict";var r=n(95);t.a={Position:r.a}},function(e,t,n){"use strict";function r(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}var i=function(){function e(e,t){for(var n=0;n<t.length;n++){var r=t[n];r.enumerable=r.enumerable||!1,r.configurable=!0,"value"in r&&(r.writable=!0),Object.defineProperty(e,r.key,r)}}return function(t,n,r){return n&&e(t.prototype,n),r&&e(t,r),t}}(),o=function(){function e(t,n){r(this,e);var i="string"==typeof t?document.querySelector(t):t;if(!(i instanceof HTMLElement&&i.parentNode instanceof HTMLElement))throw new ReferenceError;if(this.el_=i,this.parent_=i.parentNode,i="string"==typeof n?document.querySelector(n):n,!(i instanceof HTMLElement))throw new ReferenceError;this.header_=i,this.height_=0,this.pad_="fixed"===window.getComputedStyle(this.header_).position}return i(e,[{key:"setup",value:function(){var e=Array.prototype.reduce.call(this.parent_.children,function(e,t){return Math.max(e,t.offsetTop)},0);this.offset_=e-(this.pad_?this.header_.offsetHeight:0),this.update()}},{key:"update",value:function(e){var t=window.pageYOffset,n=window.innerHeight;e&&"resize"===e.type&&this.setup();var r={top:this.pad_?this.header_.offsetHeight:0,bottom:this.parent_.offsetTop+this.parent_.offsetHeight},i=n-r.top-Math.max(0,this.offset_-t)-Math.max(0,t+n-r.bottom);i!==this.height_&&(this.el_.style.height=(this.height_=i)+"px"),t>=this.offset_?"lock"!==this.el_.dataset.mdState&&(this.el_.dataset.mdState="lock"):"lock"===this.el_.dataset.mdState&&(this.el_.dataset.mdState="")}},{key:"reset",value:function(){this.el_.dataset.mdState="",this.el_.style.height="",this.height_=0}}]),e}();t.a=o},function(e,t,n){"use strict";var r=n(97),i=n(100);t.a={Adapter:r.a,Repository:i.a}},function(e,t,n){"use strict";var r=n(99);t.a={GitHub:r.a}},function(e,t,n){"use strict";function r(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}var i=n(78),o=n.n(i),a=function(){function e(e,t){for(var n=0;n<t.length;n++){var r=t[n];r.enumerable=r.enumerable||!1,r.configurable=!0,"value"in r&&(r.writable=!0),Object.defineProperty(e,r.key,r)}}return function(t,n,r){return n&&e(t.prototype,n),r&&e(t,r),t}}(),s=function(){function e(t){r(this,e);var n="string"==typeof t?document.querySelector(t):t;if(!(n instanceof HTMLAnchorElement))throw new ReferenceError;this.el_=n,this.base_=this.el_.href,this.salt_=this.hash_(this.base_)}return a(e,[{key:"fetch",value:function(){var e=this;return new Promise(function(t){var n=o.a.getJSON(e.salt_+".cache-source");"undefined"!=typeof n?t(n):e.fetch_().then(function(n){o.a.set(e.salt_+".cache-source",n,{expires:1/96}),t(n)})})}},{key:"fetch_",value:function(){throw new Error("fetch_(): Not implemented")}},{key:"format_",value:function(e){return e>1e4?(e/1e3).toFixed(0)+"k":e>1e3?(e/1e3).toFixed(1)+"k":""+e}},{key:"hash_",value:function(e){var t=0;if(0===e.length)return t;for(var n=0,r=e.length;n<r;n++)t=(t<<5)-t+e.charCodeAt(n),t|=0;return t}}]),e}();t.a=s},function(e,t,n){"use strict";function r(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}function i(e,t){if(!e)throw new ReferenceError("this hasn't been initialised - super() hasn't been called");return!t||"object"!=typeof t&&"function"!=typeof t?e:t}function o(e,t){if("function"!=typeof t&&null!==t)throw new TypeError("Super expression must either be null or a function, not "+typeof t);e.prototype=Object.create(t&&t.prototype,{constructor:{value:e,enumerable:!1,writable:!0,configurable:!0}}),t&&(Object.setPrototypeOf?Object.setPrototypeOf(e,t):e.__proto__=t)}var a=n(98),s=function(){function e(e,t){var n=[],r=!0,i=!1,o=void 0;try{for(var a,s=e[Symbol.iterator]();!(r=(a=s.next()).done)&&(n.push(a.value),!t||n.length!==t);r=!0);}catch(e){i=!0,o=e}finally{try{!r&&s.return&&s.return()}finally{if(i)throw o}}return n}return function(t,n){if(Array.isArray(t))return t;if(Symbol.iterator in Object(t))return e(t,n);throw new TypeError("Invalid attempt to destructure non-iterable instance")}}(),c=function(){function e(e,t){for(var n=0;n<t.length;n++){var r=t[n];r.enumerable=r.enumerable||!1,r.configurable=!0,"value"in r&&(r.writable=!0),Object.defineProperty(e,r.key,r)}}return function(t,n,r){return n&&e(t.prototype,n),r&&e(t,r),t}}(),u=function(e){function t(e){r(this,t);var n=i(this,(t.__proto__||Object.getPrototypeOf(t)).call(this,e)),o=/^.+github\.com\/([^\/]+)\/?([^\/]+)?.*$/.exec(n.base_);if(o&&3===o.length){
+var a=s(o,3),c=a[1],u=a[2];n.base_="https://api.github.com/users/"+c+"/repos",n.name_=u}return n}return o(t,e),c(t,[{key:"fetch_",value:function(){var e=this;return fetch(this.base_).then(function(e){return e.json()}).then(function(t){if(!(t instanceof Array))throw new TypeError;if(e.name_){var n=t.find(function(t){return t.name===e.name_});return n?[e.format_(n.stargazers_count)+" Stars",e.format_(n.forks_count)+" Forks"]:[]}return[t.length+" Repositories"]})}}]),t}(a.a);t.a=u},function(e,t,n){"use strict";(function(e){function n(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}var r=function(){function e(e,t){for(var n=0;n<t.length;n++){var r=t[n];r.enumerable=r.enumerable||!1,r.configurable=!0,"value"in r&&(r.writable=!0),Object.defineProperty(e,r.key,r)}}return function(t,n,r){return n&&e(t.prototype,n),r&&e(t,r),t}}(),i=function(){function t(e){n(this,t);var r="string"==typeof e?document.querySelector(e):e;if(!(r instanceof HTMLElement))throw new ReferenceError;this.el_=r}return r(t,[{key:"initialize",value:function(t){t.length&&this.el_.children.length&&this.el_.children[this.el_.children.length-1].appendChild(e.createElement("ul",{class:"md-source__facts"},t.map(function(t){return e.createElement("li",{class:"md-source__fact"},t)}))),this.el_.dataset.mdState="done"}}]),t}();t.a=i}).call(t,n(13))},function(e,t,n){"use strict";var r=n(102);t.a={Toggle:r.a}},function(e,t,n){"use strict";function r(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}var i=function(){function e(e,t){for(var n=0;n<t.length;n++){var r=t[n];r.enumerable=r.enumerable||!1,r.configurable=!0,"value"in r&&(r.writable=!0),Object.defineProperty(e,r.key,r)}}return function(t,n,r){return n&&e(t.prototype,n),r&&e(t,r),t}}(),o=function(){function e(t){r(this,e);var n="string"==typeof t?document.querySelector(t):t;if(!(n instanceof Node))throw new ReferenceError;this.el_=n,this.offset_=5,this.active_=!1}return i(e,[{key:"update",value:function(){var e=window.pageYOffset>=this.offset_;e!==this.active_&&(this.el_.dataset.mdState=(this.active_=e)?"hidden":"")}},{key:"reset",value:function(){this.el_.dataset.mdState="",this.active_=!1}}]),e}();t.a=o},function(e,t,n){n(35),n(36),n(37),e.exports=n(38)}]);
\ No newline at end of file
diff --git a/material/base.html b/material/base.html
index e3792e945..0fa531f93 100644
--- a/material/base.html
+++ b/material/base.html
@@ -23,7 +23,7 @@
       {% else %}
         <link rel="shortcut icon" href="{{ base_url }}/assets/images/favicon.png">
       {% endif %}
-      <meta name="generator" content="mkdocs-{{ mkdocs_version }}, mkdocs-material-1.6.3">
+      <meta name="generator" content="mkdocs-{{ mkdocs_version }}, mkdocs-material-1.6.4">
     {% endblock %}
     {% block htmltitle %}
       {% if page and page.meta.title %}
@@ -149,7 +149,7 @@
       {% endblock %}
     </div>
     {% block scripts %}
-      <script src="{{ base_url }}/assets/javascripts/application-1a4408fe3b.js"></script>
+      <script src="{{ base_url }}/assets/javascripts/application-3f3f3473e5.js"></script>
       <script>app.initialize({url:{base:"{{ base_url }}"}})</script>
       {% for path in extra_javascript %}
         <script src="{{ path }}"></script>
diff --git a/package.json b/package.json
index 4e83a64d7..1e22dd8fe 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "mkdocs-material",
-  "version": "1.6.3",
+  "version": "1.6.4",
   "description": "A Material Design theme for MkDocs",
   "keywords": [
     "mkdocs",
@@ -76,7 +76,7 @@
     "gulp-sourcemaps": "^2.4.0",
     "gulp-stylelint": "^3.7.0",
     "gulp-svgmin": "^1.2.3",
-    "gulp-uglify": "^2.0.0",
+    "gulp-uglify": "^3.0.0",
     "gulp-util": "^3.0.8",
     "js-cookie": "^2.1.3",
     "lunr": "^2.0.2",
diff --git a/src/assets/javascripts/components/Material/Source/Adapter/Abstract.js b/src/assets/javascripts/components/Material/Source/Adapter/Abstract.js
index e3c82d88f..642b2c5c7 100644
--- a/src/assets/javascripts/components/Material/Source/Adapter/Abstract.js
+++ b/src/assets/javascripts/components/Material/Source/Adapter/Abstract.js
@@ -43,7 +43,6 @@ export default class Abstract {
     const ref = (typeof el === "string")
       ? document.querySelector(el)
       : el
-
     if (!(ref instanceof HTMLAnchorElement))
       throw new ReferenceError
     this.el_ = ref
diff --git a/src/assets/javascripts/components/Material/Source/Adapter/GitHub.js b/src/assets/javascripts/components/Material/Source/Adapter/GitHub.js
index b76203ee3..a47835e58 100644
--- a/src/assets/javascripts/components/Material/Source/Adapter/GitHub.js
+++ b/src/assets/javascripts/components/Material/Source/Adapter/GitHub.js
@@ -40,14 +40,17 @@ export default class GitHub extends Abstract {
   constructor(el) {
     super(el)
 
-    /* Extract user and repository name from URL, as we have to query for all
+    /* Extract user (and repository name) from URL, as we have to query for all
        repositories, to omit 404 errors for private repositories */
-    const [, user, name] = /^.+github\.com\/([^\/]+)\/([^\/]+).*$/
+    const matches = /^.+github\.com\/([^\/]+)\/?([^\/]+)?.*$/
       .exec(this.base_)
+    if (matches && matches.length === 3) {
+      const [, user, name] = matches
 
-    /* Initialize base URL and repository name */
-    this.base_ = `https://api.github.com/users/${user}/repos`
-    this.name_ = name
+      /* Initialize base URL and repository name */
+      this.base_ = `https://api.github.com/users/${user}/repos`
+      this.name_ = name
+    }
   }
 
   /**
@@ -59,13 +62,25 @@ export default class GitHub extends Abstract {
     return fetch(this.base_)
       .then(response => response.json())
       .then(data => {
-        const repo = data.find(item => item.name === this.name_)
-        return repo
-          ? [
-            `${this.format_(repo.stargazers_count)} Stars`,
-            `${this.format_(repo.forks_count)} Forks`
+        if (!(data instanceof Array))
+          throw new TypeError
+
+        /* Display number of stars and forks, if repository is given */
+        if (this.name_) {
+          const repo = data.find(item => item.name === this.name_)
+          return repo
+            ? [
+              `${this.format_(repo.stargazers_count)} Stars`,
+              `${this.format_(repo.forks_count)} Forks`
+            ]
+            : []
+
+        /* Display number of repositories, otherwise */
+        } else {
+          return [
+            `${data.length} Repositories`
           ]
-          : []
+        }
       })
   }
 }
diff --git a/yarn.lock b/yarn.lock
index 819ce2e14..d2084b657 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1128,7 +1128,7 @@ combined-stream@^1.0.5, combined-stream@~1.0.5:
   dependencies:
     delayed-stream "~1.0.0"
 
-commander@2.9.x, commander@^2.9.0:
+commander@2.9.x, commander@^2.9.0, commander@~2.9.0:
   version "2.9.0"
   resolved "https://registry.yarnpkg.com/commander/-/commander-2.9.0.tgz#9c99094176e12240cb22d6c5146098400fe0f7d4"
   dependencies:
@@ -1565,11 +1565,7 @@ ecc-jsbn@~0.1.1:
   dependencies:
     jsbn "~0.1.0"
 
-electron-to-chromium@^1.2.3:
-  version "1.2.4"
-  resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.2.4.tgz#9751cbea89fa120bf88c226ba41eb8d0b6f1b597"
-
-electron-to-chromium@^1.3.9:
+electron-to-chromium@^1.2.3, electron-to-chromium@^1.3.9:
   version "1.3.10"
   resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.10.tgz#63d62b785471f0d8dda85199d64579de8a449f08"
 
@@ -2454,17 +2450,16 @@ gulp-svgmin@^1.2.3:
     gulp-util "^3.0.4"
     svgo "^0.7.0"
 
-gulp-uglify@^2.0.0:
-  version "2.0.1"
-  resolved "https://registry.yarnpkg.com/gulp-uglify/-/gulp-uglify-2.0.1.tgz#e8cfb831014fc9ff2e055e33785861830d499365"
+gulp-uglify@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/gulp-uglify/-/gulp-uglify-3.0.0.tgz#0df0331d72a0d302e3e37e109485dddf33c6d1ca"
   dependencies:
     gulplog "^1.0.0"
     has-gulplog "^0.1.0"
     lodash "^4.13.1"
     make-error-cause "^1.1.1"
     through2 "^2.0.0"
-    uglify-js "2.7.5"
-    uglify-save-license "^0.4.1"
+    uglify-js "^3.0.5"
     vinyl-sourcemaps-apply "^0.2.0"
 
 gulp-util@^3, gulp-util@^3.0, gulp-util@^3.0.0, gulp-util@^3.0.4, gulp-util@^3.0.6, gulp-util@^3.0.7, gulp-util@^3.0.8, gulp-util@~3.0.0:
@@ -5444,7 +5439,7 @@ typedarray@^0.0.6:
   version "0.0.6"
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
 
-uglify-js@2.7.5, uglify-js@2.7.x, uglify-js@^2.7.5, uglify-js@~2.7.3:
+uglify-js@2.7.x, uglify-js@^2.7.5, uglify-js@~2.7.3:
   version "2.7.5"
   resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-2.7.5.tgz#4612c0c7baaee2ba7c487de4904ae122079f2ca8"
   dependencies:
@@ -5453,9 +5448,12 @@ uglify-js@2.7.5, uglify-js@2.7.x, uglify-js@^2.7.5, uglify-js@~2.7.3:
     uglify-to-browserify "~1.0.0"
     yargs "~3.10.0"
 
-uglify-save-license@^0.4.1:
-  version "0.4.1"
-  resolved "https://registry.yarnpkg.com/uglify-save-license/-/uglify-save-license-0.4.1.tgz#95726c17cc6fd171c3617e3bf4d8d82aa8c4cce1"
+uglify-js@^3.0.5:
+  version "3.0.11"
+  resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-3.0.11.tgz#81f594b9a24dad76e39da92f8f06e5b3bc8c2e11"
+  dependencies:
+    commander "~2.9.0"
+    source-map "~0.5.1"
 
 uglify-to-browserify@~1.0.0:
   version "1.0.2"