diff --git a/ui/widget.js b/ui/widget.js
index 30034f5924e..4b58712052b 100644
--- a/ui/widget.js
+++ b/ui/widget.js
@@ -717,6 +717,8 @@ $.each( { show: "fadeIn", hide: "fadeOut" }, function( method, defaultEffect ) {
 		options = options || {};
 		if ( typeof options === "number" ) {
 			options = { duration: options };
+		} else if ( options === true ) {
+			options = {};
 		}
 
 		hasOptions = !$.isEmptyObject( options );