diff --git a/app/views/layouts/_header.html.erb b/app/views/layouts/_header.html.erb
index c1a1faff9..51875e0b7 100644
--- a/app/views/layouts/_header.html.erb
+++ b/app/views/layouts/_header.html.erb
@@ -8,7 +8,7 @@
     <ul class="navbar-nav">
       <form action="/search" method='get' class="navbar-form navbar-left" autocomplete="off">
         <div class="input-group" style="min-width: 160px;">
-          <input class="form-control" id="search-input" type="text" name='q' placeholder="Search maps" value='<%= params[:id] if params[:action] == "search" %>'>
+          <input class="form-control" id="search-input" type="text" name='q' placeholder="Search maps" value='<%= params[:id] if params[:action] == "search" %>' required>
           <span class="input-group-append">
             <button class="btn btn-light" type="submit"><i class="fa fa-search"></i></button>
           </span>