diff -Naur a/eva.module b/eva.module
--- a/eva.module	2012-08-30 15:13:03.000000000 +1000
+++ b/eva.module	2012-08-30 15:13:46.000000000 +1000
@@ -36,7 +36,7 @@
           'weight' => 10,
         );
         // Provide a separate extra field for the exposed form if there is any.
-        if ($view['exposed form']) {
+        if (isset($view['exposed form'])) {
           $extras[$entity][$bundle]['display'][$view['name'] . '_' . $view['display'] . '_' . 'form'] = array(
             'label' => ((empty($view['title'])) ? $view['name'] : $view['title']) . ' (' . t('Exposed form') . ')', 
             'description' => t('The exposed filter form of the view.'),