diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1e24445b..ffe04ccc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,7 @@
 - Increase font-size of code blocks.
 - Reduce indent of nested "table of contents" links.
 - Extend [archive grid view](https://mmistakes.github.io/minimal-mistakes/docs/layouts/) to the right to better fill the page.
+- URL encode title and page URL in social share links. [#1177](https://github.com/mmistakes/minimal-mistakes/pull/1177)
 
 ## Bug Fixes
 
diff --git a/_includes/social-share.html b/_includes/social-share.html
index dbf769ef..71bc306a 100644
--- a/_includes/social-share.html
+++ b/_includes/social-share.html
@@ -3,11 +3,11 @@
     <h4 class="page__share-title">{{ site.data.ui-text[site.locale].share_on_label | default: "Share on" }}</h4>
   {% endif %}
 
-  <a href="https://twitter.com/intent/tweet?{% if site.twitter.username %}via={{ site.twitter.username }}&{% endif %}text={{ page.title }} {{ page.url | absolute_url }}" class="btn btn--twitter" title="{{ site.data.ui-text[site.locale].share_on_label | default: 'Share on' }} Twitter"><i class="fa fa-fw fa-twitter" aria-hidden="true"></i><span> Twitter</span></a>
+  <a href="https://twitter.com/intent/tweet?{% if site.twitter.username %}via={{ site.twitter.username | url_encode }}&{% endif %}text={{ page.title | url_encode }}%20{{ page.url | absolute_url | url_encode }}" class="btn btn--twitter" title="{{ site.data.ui-text[site.locale].share_on_label | default: 'Share on' }} Twitter"><i class="fa fa-fw fa-twitter" aria-hidden="true"></i><span> Twitter</span></a>
 
-  <a href="https://www.facebook.com/sharer/sharer.php?u={{ page.url | absolute_url }}" class="btn btn--facebook" title="{{ site.data.ui-text[site.locale].share_on_label | default: 'Share on' }} Facebook"><i class="fa fa-fw fa-facebook" aria-hidden="true"></i><span> Facebook</span></a>
+  <a href="https://www.facebook.com/sharer/sharer.php?u={{ page.url | absolute_url | url_encode }}" class="btn btn--facebook" title="{{ site.data.ui-text[site.locale].share_on_label | default: 'Share on' }} Facebook"><i class="fa fa-fw fa-facebook" aria-hidden="true"></i><span> Facebook</span></a>
 
-  <a href="https://plus.google.com/share?url={{ page.url | absolute_url }}" class="btn btn--google-plus" title="{{ site.data.ui-text[site.locale].share_on_label | default: 'Share on' }} Google Plus"><i class="fa fa-fw fa-google-plus" aria-hidden="true"></i><span> Google+</span></a>
+  <a href="https://plus.google.com/share?url={{ page.url | absolute_url | url_encode }}" class="btn btn--google-plus" title="{{ site.data.ui-text[site.locale].share_on_label | default: 'Share on' }} Google Plus"><i class="fa fa-fw fa-google-plus" aria-hidden="true"></i><span> Google+</span></a>
 
-  <a href="https://www.linkedin.com/shareArticle?mini=true&url={{ page.url | absolute_url }}" class="btn btn--linkedin" title="{{ site.data.ui-text[site.locale].share_on_label | default: 'Share on' }} LinkedIn"><i class="fa fa-fw fa-linkedin" aria-hidden="true"></i><span> LinkedIn</span></a>
+  <a href="https://www.linkedin.com/shareArticle?mini=true&url={{ page.url | absolute_url | url_encode }}" class="btn btn--linkedin" title="{{ site.data.ui-text[site.locale].share_on_label | default: 'Share on' }} LinkedIn"><i class="fa fa-fw fa-linkedin" aria-hidden="true"></i><span> LinkedIn</span></a>
 </section>
diff --git a/docs/_docs/18-history.md b/docs/_docs/18-history.md
index 528b5c3c..125ff95f 100644
--- a/docs/_docs/18-history.md
+++ b/docs/_docs/18-history.md
@@ -4,7 +4,7 @@ permalink: /docs/history/
 excerpt: "Change log of enhancements and bug fixes made to the theme."
 sidebar:
   nav: docs
-last_modified_at: 2017-08-10T14:46:00-04:00
+last_modified_at: 2017-08-18T12:20:59-04:00
 ---
 
 ## Unreleased
@@ -17,6 +17,7 @@ last_modified_at: 2017-08-10T14:46:00-04:00
 - Increase font-size of code blocks.
 - Reduce indent of nested "table of contents" links.
 - Extend [archive grid view](https://mmistakes.github.io/minimal-mistakes/docs/layouts/) to the right to better fill the page.
+- URL encode title and page URL in social share links. [#1177](https://github.com/mmistakes/minimal-mistakes/pull/1177)
 
 ## Bug Fixes
 
diff --git a/docs/_includes/social-share.html b/docs/_includes/social-share.html
index dbf769ef..71bc306a 100644
--- a/docs/_includes/social-share.html
+++ b/docs/_includes/social-share.html
@@ -3,11 +3,11 @@
     <h4 class="page__share-title">{{ site.data.ui-text[site.locale].share_on_label | default: "Share on" }}</h4>
   {% endif %}
 
-  <a href="https://twitter.com/intent/tweet?{% if site.twitter.username %}via={{ site.twitter.username }}&{% endif %}text={{ page.title }} {{ page.url | absolute_url }}" class="btn btn--twitter" title="{{ site.data.ui-text[site.locale].share_on_label | default: 'Share on' }} Twitter"><i class="fa fa-fw fa-twitter" aria-hidden="true"></i><span> Twitter</span></a>
+  <a href="https://twitter.com/intent/tweet?{% if site.twitter.username %}via={{ site.twitter.username | url_encode }}&{% endif %}text={{ page.title | url_encode }}%20{{ page.url | absolute_url | url_encode }}" class="btn btn--twitter" title="{{ site.data.ui-text[site.locale].share_on_label | default: 'Share on' }} Twitter"><i class="fa fa-fw fa-twitter" aria-hidden="true"></i><span> Twitter</span></a>
 
-  <a href="https://www.facebook.com/sharer/sharer.php?u={{ page.url | absolute_url }}" class="btn btn--facebook" title="{{ site.data.ui-text[site.locale].share_on_label | default: 'Share on' }} Facebook"><i class="fa fa-fw fa-facebook" aria-hidden="true"></i><span> Facebook</span></a>
+  <a href="https://www.facebook.com/sharer/sharer.php?u={{ page.url | absolute_url | url_encode }}" class="btn btn--facebook" title="{{ site.data.ui-text[site.locale].share_on_label | default: 'Share on' }} Facebook"><i class="fa fa-fw fa-facebook" aria-hidden="true"></i><span> Facebook</span></a>
 
-  <a href="https://plus.google.com/share?url={{ page.url | absolute_url }}" class="btn btn--google-plus" title="{{ site.data.ui-text[site.locale].share_on_label | default: 'Share on' }} Google Plus"><i class="fa fa-fw fa-google-plus" aria-hidden="true"></i><span> Google+</span></a>
+  <a href="https://plus.google.com/share?url={{ page.url | absolute_url | url_encode }}" class="btn btn--google-plus" title="{{ site.data.ui-text[site.locale].share_on_label | default: 'Share on' }} Google Plus"><i class="fa fa-fw fa-google-plus" aria-hidden="true"></i><span> Google+</span></a>
 
-  <a href="https://www.linkedin.com/shareArticle?mini=true&url={{ page.url | absolute_url }}" class="btn btn--linkedin" title="{{ site.data.ui-text[site.locale].share_on_label | default: 'Share on' }} LinkedIn"><i class="fa fa-fw fa-linkedin" aria-hidden="true"></i><span> LinkedIn</span></a>
+  <a href="https://www.linkedin.com/shareArticle?mini=true&url={{ page.url | absolute_url | url_encode }}" class="btn btn--linkedin" title="{{ site.data.ui-text[site.locale].share_on_label | default: 'Share on' }} LinkedIn"><i class="fa fa-fw fa-linkedin" aria-hidden="true"></i><span> LinkedIn</span></a>
 </section>