diff --git a/src/attributes/prop.js b/src/attributes/prop.js
index e80532eb6f..3c180593fe 100644
--- a/src/attributes/prop.js
+++ b/src/attributes/prop.js
@@ -59,7 +59,6 @@ jQuery.extend( {
 				// Support: IE <=9 - 11+
 				// elem.tabIndex doesn't always return the
 				// correct value when it hasn't been explicitly set
-				// https://web.archive.org/web/20141116233347/http://fluidproject.org/blog/2008/01/09/getting-setting-and-removing-tabindex-values-with-javascript/
 				// Use proper attribute retrieval (trac-12072)
 				var tabindex = elem.getAttribute( "tabindex" );
 
diff --git a/src/queue/delay.js b/src/queue/delay.js
index fe3a6f6b77..79c2aca809 100644
--- a/src/queue/delay.js
+++ b/src/queue/delay.js
@@ -4,7 +4,6 @@ import "../queue.js";
 import "../effects.js"; // Delay is optional because of this dependency
 
 // Based off of the plugin by Clint Helfers, with permission.
-// https://web.archive.org/web/20100324014747/http://blindsignals.com/index.php/2009/07/jquery-delay/
 jQuery.fn.delay = function( time, type ) {
 	time = jQuery.fx ? jQuery.fx.speeds[ time ] || time : time;
 	type = type || "fx";