diff --git a/_includes/gallery.html b/_includes/gallery.html
index 173813d..98a61a5 100644
--- a/_includes/gallery.html
+++ b/_includes/gallery.html
@@ -1,7 +1,7 @@
 {% assign gallery=site.data.gallery[include.gallery] %}
 {% assign photos=gallery.photos | sort:'date' %}
 <div style="text-align: center;">
-{% unless include.no-link == null %}
+{% unless include.no-link %}
 <a href="/{{ site.baseurl }}/gallery/{{ include.gallery }}/">[ gallery ]</a><br />
 {% endunless %}
 {% for photo in photos %}
diff --git a/_includes/header.html b/_includes/header.html
index 9e4c8f7..34354ef 100644
--- a/_includes/header.html
+++ b/_includes/header.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html lang="en" prefix="og: http://ogp.me/ns# twitter: http://ogp.me/ns/fb/twitter#">
+<html lang="en" prefix="og: http://ogp.me/ns#">
     <head>
         <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
     
diff --git a/_plugins/assign_page.rb b/_plugins/assign_page.rb
index b4b21bf..ad5346f 100644
--- a/_plugins/assign_page.rb
+++ b/_plugins/assign_page.rb
@@ -1,5 +1,6 @@
 # adapted from
 # - https://gist.githubusercontent.com/nathangrigg/7387238/raw/fdb229fb162a303cbd9a666de8be7d0aa3515cd6/assign_page.rb
+
 module Jekyll
   module Tags
     class AssignPage < Liquid::Assign
diff --git a/blog/index.html b/blog/index.html
index d10f0ea..36b1ef2 100644
--- a/blog/index.html
+++ b/blog/index.html
@@ -6,7 +6,7 @@ layout: default
     <section>
         <header>
             <div class="timeline">
-                <time datetime="{{ post.date|date_to_xmlschema }}"><strong>{{ post.date|date:"%b %d"|upcase }}</strong><br />{{ post.date|date:"%Y" }}</time>
+                <time datetime="{{ post.date|date_to_xmlschema }}"><strong>{{ post.date | date:"%b %d" | upcase }}</strong><br />{{ post.date | date:"%Y" }}</time>
             </div>
             <h1><a href="/{{ site.baseurl }}{{ post.url }}">{{ post.title }}</a></h1>
             {% if post.description %}
