diff --git a/static/templates/settings/realm-domains-modal.handlebars b/static/templates/settings/realm-domains-modal.handlebars
index 017220f266..0147f30ead 100644
--- a/static/templates/settings/realm-domains-modal.handlebars
+++ b/static/templates/settings/realm-domains-modal.handlebars
@@ -7,7 +7,7 @@
     <table class="table table-condensed table-stripped" id="alias_table">
       <thead>
         <th>{{t "Domain" }}</th>
-        <th>{{t "Allow Subdomains"}}</th>
+        <th>{{t "Allow subdomains"}}</th>
         <th>{{t "Action" }}</th>
       </thead>
       <tbody>