diff --git a/templates/web/complete_challenge.tt2.html b/templates/web/complete_challenge.tt2.html
index 0402e2d0ed9d3b874de40395824a5bd5eb3536ed..ee95b9a3f293a62efae409960325277f93c9ddef 100644
--- a/templates/web/complete_challenge.tt2.html
+++ b/templates/web/complete_challenge.tt2.html
@@ -24,7 +24,7 @@
     </div>
 
     <div class="actions clearfix">
-        <button type="submit" class="button" name="action" value="select_email" novalidate>[% lh.maketext("Previous") %]</button>
+        <button type="submit" class="button" name="action" value="select_email" formnovalidate>[% lh.maketext("Previous") %]</button>
         <button type="submit" class="button" name="action" value="create_accounts">[% lh.maketext("Next") %]</button>
     </div>
 </form>
diff --git a/templates/web/select_sp.tt2.html b/templates/web/select_sp.tt2.html
index d5be5fdf25445f2543a789d765cc95d87410b9f8..08c5949bc1649172f49add23ec8bd678dd79dda9 100644
--- a/templates/web/select_sp.tt2.html
+++ b/templates/web/select_sp.tt2.html
@@ -29,7 +29,7 @@
     </div>
 
     <div class="actions clearfix">
-        <button type="submit" class="button" name="action" value="select_federation" novalidate>[% lh.maketext("Previous") %]</button>
+        <button type="submit" class="button" name="action" value="select_federation" formnovalidate>[% lh.maketext("Previous") %]</button>
         <button type="submit" class="button" name="action" value="select_email">[% lh.maketext("Next") %]</button>
     </div>
 </form>