diff --git a/_includes/masthead.html b/_includes/masthead.html
index cc2c42abd219..c6bbefcbfa8c 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 site.logo %}<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 }}" alt=""></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 -%}