diff --git a/src/jquery/jquery.js b/src/jquery/jquery.js
index 4e82608f..38c8da30 100644
--- a/src/jquery/jquery.js
+++ b/src/jquery/jquery.js
@@ -985,7 +985,10 @@ jQuery.fn = jQuery.prototype = {
 	add: function(t) {
 		return this.pushStack( jQuery.merge(
 			this.get(),
-			typeof t == "string" ? jQuery(t).get() : t.length ? t : [t] )
+			t.constructor == String ?
+				jQuery(t).get() :
+				t.length != undefined && !t.nodeName ?
+					t : [t] )
 		);
 	},