diff --git a/bin/gollum b/bin/gollum
index 1880c175..e28e37f5 100755
--- a/bin/gollum
+++ b/bin/gollum
@@ -134,6 +134,7 @@ MSG
   opts.on("--mathjax", "Enable MathJax (renders mathematical equations).",
     "By default, uses the 'TeX-AMS-MML_HTMLorMML' config with the 'autoload-all' extension.") do
     wiki_options[:mathjax] = true
+    wiki_options[:mathjax_config] = 'mathjax.config.js'
   end
   opts.on("--critic-markup", "Enable support for annotations using CriticMarkup.") do
     wiki_options[:critic_markup] = true
@@ -155,10 +156,6 @@ MSG
     "Can be set to 'gravatar', 'identicon' or 'none'. Default: 'none'.") do |mode|
     wiki_options[:user_icons] = mode
   end
-  opts.on("--mathjax-config [FILE]", "Specify path to a custom MathJax configuration.",
-    "If not specified, uses the '<git-repo>/mathjax.config.js' file.") do |file|
-    wiki_options[:mathjax_config] = file || 'mathjax.config.js'
-  end
   opts.on("--template-dir [PATH]", "Specify custom mustache template directory.") do |path|
     wiki_options[:template_dir] = path
   end
diff --git a/lib/gollum/app.rb b/lib/gollum/app.rb
index 22c2908f..e2caa6ec 100644
--- a/lib/gollum/app.rb
+++ b/lib/gollum/app.rb
@@ -152,15 +152,15 @@ module Precious
         end
       end
 
-      get %r{/(edit|create)/custom\.(js|css)} do
+      get %r{/(edit|create)/(custom|mathjax\.config)\.(js|css)} do
         forbid('Changing this resource is not allowed.')
       end
 
-      post %r{/(delete|rename|edit|create)/custom\.(js|css)} do
+      post %r{/(delete|rename|edit|create)/(custom|mathjax\.config)\.(js|css)} do
         forbid('Changing this resource is not allowed.')
       end
 
-      post %r{/revert/custom\.(js|css)/.*/.*} do
+      post %r{/revert/(custom|mathjax\.config\.)\.(js|css)/.*/.*} do
         forbid('Changing this resource is not allowed.')
       end
 
diff --git a/test/test_app.rb b/test/test_app.rb
index 27e0ecf2..e4832283 100644
--- a/test/test_app.rb
+++ b/test/test_app.rb
@@ -54,7 +54,7 @@ context "Frontend" do
                      { :name => 'user1', :email => 'user1' });
 
     get page
-    expected = "<h2><a class=\"anchor\" (href|id)=\"(#)?#{text}\" (href|id)=\"(#)?#{text}\"><i class=\"fa fa-link\"></i></a>#{text}</h2>"
+    expected = "<h2 class=\"editable\"><a class=\"anchor\" (href|id)=\"(#)?#{text}\" (href|id)=\"(#)?#{text}\"><i class=\"fa fa-link\"></i></a>#{text}</h2>"
     actual   = nfd(last_response.body)
 
     assert_match /#{expected}/, actual
@@ -524,6 +524,8 @@ context "Frontend" do
         get "/gollum/#{route}/custom#{ext}"
         assert_equal 403, last_response.status, "get /gollum/#{route}/custom#{ext} -- #{last_response.inspect}"
       end
+      get "/gollum/#{route}/mathjax.config.js"
+      assert_equal 403, last_response.status, "get /gollum/#{route}/mathjax.config.js -- #{last_response.inspect}"
     end
 
     ['delete', 'rename', 'edit', 'create'].each do |route|
@@ -531,6 +533,8 @@ context "Frontend" do
         post "/gollum/#{route}/custom#{ext}"
         assert_equal 403, last_response.status, "post /gollum/#{route}/custom#{ext} -- #{last_response.inspect}"
       end
+      post "/gollum/#{route}/mathjax.config.js"
+      assert_equal 403, last_response.status, "post /gollum/#{route}/mathjax.config.js -- #{last_response.inspect}"
     end
 
     ['.css', '.js'].each do |ext|