search_api_autocomplete.entity.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/search_api_autocomplete.entity.php b/search_api_autocomplete.entity.php
index a572e41..4bd4939 100644
--- a/search_api_autocomplete.entity.php
+++ b/search_api_autocomplete.entity.php
@@ -124,7 +124,7 @@ class SearchApiAutocompleteSearch extends Entity {
    */
   public function alterElement(array &$element, array $fields = array()) {
     if (search_api_autocomplete_access($this)) {
-      $fields_string = $fields ? implode(' ', $fields) : ' ';
+      $fields_string = $fields ? implode(' ', $fields) : '';
       $element['#attached']['css'][] = drupal_get_path('module', 'search_api_autocomplete') . '/search_api_autocomplete.css';
       $element['#autocomplete_path'] = 'search_api_autocomplete/' . $this->machine_name . '/' . $fields_string;
     }