diff --git a/src/ElasticsearchEngine.php b/src/ElasticsearchEngine.php
index f68b01a..944b1f4 100644
--- a/src/ElasticsearchEngine.php
+++ b/src/ElasticsearchEngine.php
@@ -142,7 +142,7 @@ protected function performSearch(Builder $builder, array $options = [])
             $params['body']['size'] = $options['size'];
         }
 
-        if (count($options['numericFilters'])) {
+        if (isset($options['numericFilters'])) {
             $params['body']['query']['bool']['must'] = array_merge($params['body']['query']['bool']['must'],
                 $options['numericFilters']);
         }