diff --git a/misc/autocomplete.js b/misc/autocomplete.js
index 5e85be4..9248364 100644
--- a/misc/autocomplete.js
+++ b/misc/autocomplete.js
@@ -182,6 +182,7 @@ Drupal.jsAC.prototype.hidePopup = function (keycode) {
  */
 Drupal.jsAC.prototype.populatePopup = function () {
   var $input = $(this.input);
+  $($input).parent().css('position', 'relative');
   var position = $input.position();
   // Show popup.
   if (this.popup) {