diff --git a/templates/topbar.html b/templates/topbar.html
index 171b107..4092ce6 100644
--- a/templates/topbar.html
+++ b/templates/topbar.html
@@ -19,7 +19,7 @@
 
             <div class="search-controls">
                 <input placeholder="Search Identifier" type="text" id="search-input" name="i"
-                    value="{{ searched_ident|default('')|e }}" autofocus/>
+                    value="{{ searched_ident|default('')|e }}" autofocus required/>
                 <button type="button" id="clear-search" class="visible-if-js icon-cross"><span class="screenreader">Clear</span></button>
                 <button type="submit" class="icon-search"><span class="screenreader">Go get it</span></button>
             </div>