diff --git a/ui/jquery.ui.autocomplete.js b/ui/jquery.ui.autocomplete.js
index ece6df4d5..7349ce98b 100644
--- a/ui/jquery.ui.autocomplete.js
+++ b/ui/jquery.ui.autocomplete.js
@@ -347,6 +347,9 @@ $.widget("ui.menu", {
 			// mouseenter doesn't work with event delegation
 			.mouseenter(function() {
 				self.activate($(this).parent());
+			})
+			.mouseleave(function() {
+				self.deactivate();
 			});
 	},