diff --git a/ui/jquery.ui.autocomplete.js b/ui/jquery.ui.autocomplete.js
index c5b78a6e3..60ba69f89 100644
--- a/ui/jquery.ui.autocomplete.js
+++ b/ui/jquery.ui.autocomplete.js
@@ -66,6 +66,8 @@ $.widget( "ui.autocomplete", {
 					self.element.val( self.term );
 					self.close( event );
 					break;
+				case keyCode.LEFT:
+				case keyCode.RIGHT:
 				case keyCode.SHIFT:
 				case keyCode.CONTROL:
 				case 18: