diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index b3775706e..4042152fd 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -51,10 +51,12 @@ module ApplicationHelper
 
   def format_text(text, **options)
     raw DTextRagel.parse(text, **options)
+  rescue DTextRagel::Error => e
+    raw ""
   end
 
   def strip_dtext(text)
-    raw(DTextRagel.parse_strip(text))
+    format_text(text, strip: true)
   end
 
   def error_messages_for(instance_name)
diff --git a/app/presenters/wiki_page_presenter.rb b/app/presenters/wiki_page_presenter.rb
index 2207cb3ae..f70822be3 100644
--- a/app/presenters/wiki_page_presenter.rb
+++ b/app/presenters/wiki_page_presenter.rb
@@ -9,10 +9,6 @@ class WikiPagePresenter
     wiki_page.body
   end
 
-  def blurb
-    DTextRagel.parse_strip(excerpt.to_s)
-  end
-
   # Produce a formatted page that shows the difference between two versions of a page.
   def diff(other_version)
     pattern = Regexp.new('(?:<.+?>)|(?:[0-9_A-Za-z\x80-\xff]+[\x09\x20]?)|(?:[ \t]+)|(?:\r?\n)|(?:.+?)')
diff --git a/app/views/posts/index.html.erb b/app/views/posts/index.html.erb
index ec328ec91..325eba7c9 100644
--- a/app/views/posts/index.html.erb
+++ b/app/views/posts/index.html.erb
@@ -72,7 +72,7 @@
     <%= content_tag :link, nil, rel: "prev", href: prev_page_url %>
   <% end %>
   <% if @post_set.has_wiki? %>
-    <meta name="description" content="<%= @post_set.wiki_page.presenter.blurb %>">
+    <meta name="description" content="<%= strip_dtext(@post_set.wiki_page.presenter.excerpt) %>">
   <% else %>
     <meta name="description" content="<%= Danbooru.config.description %>">
   <% end %>
diff --git a/app/views/wiki_pages/show.html.erb b/app/views/wiki_pages/show.html.erb
index c7c278abb..113ba7515 100644
--- a/app/views/wiki_pages/show.html.erb
+++ b/app/views/wiki_pages/show.html.erb
@@ -44,7 +44,7 @@
 <% end %>
 
 <% content_for(:html_header) do %>
-  <meta name="description" content="<%= @wiki_page.presenter.blurb %>"></meta>
+  <meta name="description" content="<%= strip_dtext(@wiki_page.presenter.excerpt) %>"></meta>
 <% end %>
 
 <%= render "secondary_links" %>
diff --git a/test/helpers/application_helper_test.rb b/test/helpers/application_helper_test.rb
new file mode 100644
index 000000000..f9f0214de
--- /dev/null
+++ b/test/helpers/application_helper_test.rb
@@ -0,0 +1,14 @@
+require "test_helper"
+
+class ApplicationHelperTest < ActionView::TestCase
+  context "The application helper" do
+    context "format_text method" do
+      should "not raise an exception for invalid DText" do
+        dtext = "* a\n" * 513
+
+        assert_nothing_raised { format_text(dtext) }
+        assert_equal("", format_text(dtext))
+      end
+    end
+  end
+end