commit 98e5610a860068d903bac560199c56c5206a9e29
Author: Joel Pittet <joel@pittet.ca>
Date:   Thu Aug 7 15:09:47 2014 -0700

    consistent

diff --git a/core/modules/views_ui/templates/views-ui-expose-filter-form.html.twig b/core/modules/views_ui/templates/views-ui-expose-filter-form.html.twig
index 5699cd7..dfc4775 100644
--- a/core/modules/views_ui/templates/views-ui-expose-filter-form.html.twig
+++ b/core/modules/views_ui/templates/views-ui-expose-filter-form.html.twig
@@ -29,7 +29,7 @@
 {{ form.operator }}
 {{ form.value }}
 
-{% if form.use_operator is not empty %}
+{% if form.use_operator %}
   <div class="views-left-40">
   {{ form.use_operator }}
   </div>