diff --git a/ui/mouse.js b/ui/mouse.js
index f9c2595526d..c1d42a18787 100644
--- a/ui/mouse.js
+++ b/ui/mouse.js
@@ -177,6 +177,10 @@ return $.widget("ui.mouse", {
 			this._mouseStop(event);
 		}
 
+		if (this._mouseDelayTimer) {
+			clearTimeout(this._mouseDelayTimer);
+		}
+
 		mouseHandled = false;
 		return false;
 	},