diff --git a/CHANGELOG.md b/CHANGELOG.md
index 10543e812..c03413235 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+## [4.15.1](https://github.com/mmistakes/minimal-mistakes/releases/tag/4.15.1)
+
+### Bug Fixes
+
+- Fix empty `<img>` when `site_logo` is not assigned. [#2026](https://github.com/mmistakes/minimal-mistakes/pull/2026#issuecomment-454809876)
+
 ## [4.15.0](https://github.com/mmistakes/minimal-mistakes/releases/tag/4.15.0)
 
 ### Enhancements
diff --git a/README.md b/README.md
index d4b14a8b4..efd33e2f5 100644
--- a/README.md
+++ b/README.md
@@ -126,7 +126,7 @@ To install:
    bundle
    ```
 
-4. Add `remote_theme: "mmistakes/minimal-mistakes@4.15.0"` to your `_config.yml` file. Remove any other `theme:` or `remote_theme:` entry.
+4. Add `remote_theme: "mmistakes/minimal-mistakes@4.15.1"` to your `_config.yml` file. Remove any other `theme:` or `remote_theme:` entry.
 
 ## Usage
 
diff --git a/_includes/masthead.html b/_includes/masthead.html
index f3ee59e9d..cc2c42abd 100644
--- a/_includes/masthead.html
+++ b/_includes/masthead.html
@@ -8,7 +8,7 @@
   <div class="masthead__inner-wrap">
     <div class="masthead__menu">
       <nav id="site-nav" class="greedy-nav">
-        {% if logo_path %}<a class="site-logo" href="{{ '/' | relative_url }}"><img src="{{ logo_path }}"></a>{% endif %}
+        {% if site.logo %}<a class="site-logo" href="{{ '/' | relative_url }}"><img src="{{ logo_path }}"></a>{% endif %}
         <a class="site-title" href="{{ '/' | relative_url }}">{{ site.masthead_title | default: site.title }}</a>
         <ul class="visible-links">
           {%- for link in site.data.navigation.main -%}
diff --git a/_layouts/default.html b/_layouts/default.html
index 7640e1e17..930b983f8 100644
--- a/_layouts/default.html
+++ b/_layouts/default.html
@@ -3,7 +3,7 @@
 
 <!doctype html>
 <!--
-  Minimal Mistakes Jekyll Theme 4.15.0 by Michael Rose
+  Minimal Mistakes Jekyll Theme 4.15.1 by Michael Rose
   Copyright 2013-2019 Michael Rose - mademistakes.com | @mmistakes
   Free for personal and commercial use under the MIT license
   https://github.com/mmistakes/minimal-mistakes/blob/master/LICENSE
diff --git a/_sass/minimal-mistakes.scss b/_sass/minimal-mistakes.scss
index d3e8cfd98..00063ea33 100644
--- a/_sass/minimal-mistakes.scss
+++ b/_sass/minimal-mistakes.scss
@@ -1,5 +1,5 @@
 /*!
- * Minimal Mistakes Jekyll Theme 4.15.0 by Michael Rose
+ * Minimal Mistakes Jekyll Theme 4.15.1 by Michael Rose
  * Copyright 2013-2019 Michael Rose - mademistakes.com | @mmistakes
  * Licensed under MIT (https://github.com/mmistakes/minimal-mistakes/blob/master/LICENSE)
 */
diff --git a/assets/js/main.min.js b/assets/js/main.min.js
index 60c22c996..3b257988e 100644
--- a/assets/js/main.min.js
+++ b/assets/js/main.min.js
@@ -1,5 +1,5 @@
 /*!
- * Minimal Mistakes Jekyll Theme 4.15.0 by Michael Rose
+ * Minimal Mistakes Jekyll Theme 4.15.1 by Michael Rose
  * Copyright 2013-2019 Michael Rose - mademistakes.com | @mmistakes
  * Licensed under MIT
  */
diff --git a/docs/_docs/01-quick-start-guide.md b/docs/_docs/01-quick-start-guide.md
index 9a83510ad..1aa84f973 100644
--- a/docs/_docs/01-quick-start-guide.md
+++ b/docs/_docs/01-quick-start-guide.md
@@ -74,7 +74,7 @@ To install as a remote theme:
    bundle
    ```
 
-4. Add `remote_theme: "mmistakes/minimal-mistakes@4.15.0"` to your `_config.yml` file. Remove any other `theme:` or `remote_theme:` entry.
+4. Add `remote_theme: "mmistakes/minimal-mistakes@4.15.1"` to your `_config.yml` file. Remove any other `theme:` or `remote_theme:` entry.
 
 You may also optionally specify a branch, [tag](https://github.com/mmistakes/minimal-mistakes/tags), or commit to use by appending an @ and the Git ref (e.g., `mmistakes/minimal-mistakes@4.9.0` or `mmistakes/minimal-mistakes@bbf3cbc5fd64a3e1885f3f99eb90ba92af84063d`). This is useful when rolling back to older versions of the theme. If you don't specify a Git ref, the latest on `master` will be used.
 
diff --git a/docs/_docs/04-upgrading.md b/docs/_docs/04-upgrading.md
index 81e4edcba..9b904693e 100644
--- a/docs/_docs/04-upgrading.md
+++ b/docs/_docs/04-upgrading.md
@@ -12,7 +12,7 @@ To check which version you are currently using, view the source of your built si
 
 ```
 <!--
-  Minimal Mistakes Jekyll Theme 4.15.0 by Michael Rose
+  Minimal Mistakes Jekyll Theme 4.15.1 by Michael Rose
   Copyright 2013-2018 Michael Rose - mademistakes.com | @mmistakes
   Free for personal and commercial use under the MIT license
   https://github.com/mmistakes/minimal-mistakes/blob/master/LICENSE
@@ -28,14 +28,14 @@ Simply run `bundle update` if you're using Bundler (have a `Gemfile`) or `gem up
 When using Bundler you can downgrade or lock the theme to a specific release ([tag](https://github.com/mmistakes/minimal-mistakes/tags)), branch, or commit. Instead of `gem "minimal-mistakes-jekyll"` you'd add the following to your `Gemfile`:
 
 ```ruby
-gem "minimal-mistakes-jekyll", :git => "https://github.com/mmistakes/minimal-mistakes.git", :tag => "4.15.0"
+gem "minimal-mistakes-jekyll", :git => "https://github.com/mmistakes/minimal-mistakes.git", :tag => "4.15.1"
 ```
 
 For more information on [installing gems from git repositories](http://bundler.io/v1.16/guides/git.html) consult Bundler's documentation.
 
 ## Remote theme
 
-When setting `remote_theme: "mmistakes/minimal-mistakes@4.15.0"` in your `_config.yml` you may also optionally specify a branch, [tag](https://github.com/mmistakes/minimal-mistakes/tags), or commit to use by appending an @ and the Git ref.
+When setting `remote_theme: "mmistakes/minimal-mistakes@4.15.1"` in your `_config.yml` you may also optionally specify a branch, [tag](https://github.com/mmistakes/minimal-mistakes/tags), or commit to use by appending an @ and the Git ref.
 
 For example you can roll back to release 4.8.1 with `mmistakes/minimal-mistakes@4.8.1` or a specific commit with `mmistakes/minimal-mistakes@bbf3cbc5fd64a3e1885f3f99eb90ba92af84063d`). For a complete list of theme versions consult the [releases page](https://github.com/mmistakes/minimal-mistakes/releases).
 
diff --git a/docs/_docs/18-history.md b/docs/_docs/18-history.md
index c0ec4671c..68b754798 100644
--- a/docs/_docs/18-history.md
+++ b/docs/_docs/18-history.md
@@ -4,10 +4,16 @@ permalink: /docs/history/
 excerpt: "Change log of enhancements and bug fixes made to the theme."
 sidebar:
   nav: docs
-last_modified_at: 2019-01-16T08:24:36-05:00
+last_modified_at: 2019-01-16T11:06:09-05:00
 toc: true
 ---
 
+## [4.15.1](https://github.com/mmistakes/minimal-mistakes/releases/tag/4.15.1)
+
+### Bug Fixes
+
+- Fix empty `<img>` when `site_logo` is not assigned. [#2026](https://github.com/mmistakes/minimal-mistakes/pull/2026#issuecomment-454809876)
+
 ## [4.15.0](https://github.com/mmistakes/minimal-mistakes/releases/tag/4.15.0)
 
 ### Enhancements
diff --git a/docs/_layouts/default.html b/docs/_layouts/default.html
index 0a653074d..e56420666 100644
--- a/docs/_layouts/default.html
+++ b/docs/_layouts/default.html
@@ -3,7 +3,7 @@
 
 <!doctype html>
 <!--
-  Minimal Mistakes Jekyll Theme 4.15.0 by Michael Rose
+  Minimal Mistakes Jekyll Theme 4.15.1 by Michael Rose
   Copyright 2013-2019 Michael Rose - mademistakes.com | @mmistakes
   Free for personal and commercial use under the MIT license
   https://github.com/mmistakes/minimal-mistakes/blob/master/LICENSE
diff --git a/docs/_pages/home.md b/docs/_pages/home.md
index 1d45c6344..06898ccc8 100644
--- a/docs/_pages/home.md
+++ b/docs/_pages/home.md
@@ -9,7 +9,7 @@ header:
       url: "/docs/quick-start-guide/"
 excerpt: >
   A flexible two-column Jekyll theme. Perfect for building personal sites, blogs, and portfolios.<br />
-  <small><a href="https://github.com/mmistakes/minimal-mistakes/releases/tag/4.15.0">Latest release v4.15.0</a></small>
+  <small><a href="https://github.com/mmistakes/minimal-mistakes/releases/tag/4.15.1">Latest release v4.15.1</a></small>
 feature_row:
   - image_path: /assets/images/mm-customizable-feature.png
     alt: "customizable"
diff --git a/minimal-mistakes-jekyll.gemspec b/minimal-mistakes-jekyll.gemspec
index 00e6f182e..019572a36 100644
--- a/minimal-mistakes-jekyll.gemspec
+++ b/minimal-mistakes-jekyll.gemspec
@@ -2,7 +2,7 @@
 
 Gem::Specification.new do |spec|
   spec.name                    = "minimal-mistakes-jekyll"
-  spec.version                 = "4.15.0"
+  spec.version                 = "4.15.1"
   spec.authors                 = ["Michael Rose"]
 
   spec.summary                 = %q{A flexible two-column Jekyll theme.}
diff --git a/package.json b/package.json
index 0d007f590..ed15ca1c0 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "minimal-mistakes",
-  "version": "4.15.0",
+  "version": "4.15.1",
   "description": "Minimal Mistakes 2 column Jekyll theme.",
   "repository": {
     "type": "git",
