diff --git a/app/assets/javascripts/app/helpers/text_formatter.js b/app/assets/javascripts/app/helpers/text_formatter.js
index 458f7967a..5bdfd5830 100644
--- a/app/assets/javascripts/app/helpers/text_formatter.js
+++ b/app/assets/javascripts/app/helpers/text_formatter.js
@@ -12,35 +12,35 @@
     });
 
     var inlinePlugin = window.markdownitForInline;
-    md.use(inlinePlugin, 'utf8_symbols', 'text', function (tokens, idx) {
+    md.use(inlinePlugin, "utf8_symbols", "text", function (tokens, idx) {
       tokens[idx].content = tokens[idx].content.replace(/<->/g, "↔")
                                                .replace(/<-/g,  "←")
                                                .replace(/->/g,  "→")
                                                .replace(/<3/g,  "♥");
     });
 
-    md.use(inlinePlugin, 'link_new_window_and_missing_http', 'link_open', function (tokens, idx) {
+    md.use(inlinePlugin, "link_new_window_and_missing_http", "link_open", function (tokens, idx) {
       tokens[idx].attrs.forEach(function(attribute, index, array) {
-        if( attribute[0] === 'href' ) {
+        if( attribute[0] === "href" ) {
           array[index][1] = attribute[1].replace(/^www\./, "http://www.");
         }
       });
-      tokens[idx].attrPush([ 'target', "_blank" ]);
+      tokens[idx].attrPush([ "target", "_blank" ]);
     });
 
     var hashtagPlugin = window.markdownitHashtag;
     md.use(hashtagPlugin, {
       // compare tag_text_regexp in app/models/acts_as_taggable_on-tag.rb
-      hashtagRegExp: '[' + PosixBracketExpressions.alnum + '_\\-]+|<3',
+      hashtagRegExp: "[" + PosixBracketExpressions.alnum + "_\\-]+|<3",
       // compare tag_strings in lib/diaspora/taggabe.rb
-      preceding: '^|\\s'
+      preceding: "^|\\s"
     });
 
     var mentionPlugin = window.markdownitDiasporaMention;
     md.use(mentionPlugin, {
       mentions: mentions,
       allowHovercards: true,
-      currentUserId: app.currentUser.get('guid')
+      currentUserId: app.currentUser.get("guid")
     });
 
     var subPlugin = window.markdownitSub;
@@ -51,11 +51,13 @@
     md.use(sanitizerPlugin);
 
     // xmpp: should behave like mailto:
-    md.linkify.add('xmpp:','mailto:');
+    md.linkify.add("xmpp:","mailto:");
+    // mumble:// should behave like http://:
+    md.linkify.add("mumble:","http:");
     md.linkify.set({ fuzzyLink: false });
 
     // Bootstrap table markup
-    md.renderer.rules.table_open = function () { return '<table class="table table-striped">\n'; };
+    md.renderer.rules.table_open = function () { return "<table class=\"table table-striped\">\n"; };
 
     return md.render(text);
   };
diff --git a/spec/javascripts/app/helpers/text_formatter_spec.js b/spec/javascripts/app/helpers/text_formatter_spec.js
index 9432f836a..ff9dafaf0 100644
--- a/spec/javascripts/app/helpers/text_formatter_spec.js
+++ b/spec/javascripts/app/helpers/text_formatter_spec.js
@@ -98,6 +98,7 @@ describe("app.helpers.textFormatter", function(){
         "http://japan.co.jp",
         "http://www.mygreat-example-website.de",
         "http://www.jenseitsderfenster.de",  // from issue #3468
+        "mumble://mumble.coding4.coffee",
         "xmpp:podmin@pod.tld",
         "mailto:podmin@pod.tld"
       ];