diff --git a/README.md b/README.md
index b90ef4d..9e3a07f 100755
--- a/README.md
+++ b/README.md
@@ -690,7 +690,7 @@ Table of Contents
   - [CS-224 - Computer Organization, 2009-2010 Spring, Bilkent University](http://video.bilkent.edu.tr/course_videos.php?courseid=16) ([YouTube playlist](https://www.youtube.com/playlist?list=PLhwVAYxlh5dvB1MkZrcRZy6x_a2yORNAu))
   - [INFORMATICS 2C - INTRODUCTION TO COMPUTER SYSTEMS (AUTUMN 2016) - University of Edinburgh](http://groups.inf.ed.ac.uk/vision/VIDEO/2014/inf2c-cs.htm)
 - **Computer Architecture**
-  - [18-447 - Introduction to Computer Architecture, CMU](http://www.ece.cmu.edu/~ece447/s14/doku.php?id=schedule) ([Lectures - YouTube - Fall 15](https://youtube.com/playlist?list=PL5PHm2jkkXmi5CxxI7b3JCL1TWybTDtKq))
+  - [18-447 - Introduction to Computer Architecture, CMU](http://www.ece.cmu.edu/~ece447/s15/doku.php?id=schedule) ([Lectures - YouTube - Fall 15](https://youtube.com/playlist?list=PL5PHm2jkkXmi5CxxI7b3JCL1TWybTDtKq))
   - [CS 152 Computer Architecture and Engineering, UC Berkeley](https://www.youtube.com/playlist?list=PLkFD6_40KJIwEiwQx1dACXwh-2Fuo32qr)
   - [CSEP 548 - Computer Architecture Autumn 2012 - University of Washington](https://courses.cs.washington.edu/courses/csep548/12au/video/index.html)
   - [CS/ECE 6810 Computer Architecture, Spring 2016, University of Utah](http://www.cs.utah.edu/~rajeev/cs6810/) ([YouTube](https://www.youtube.com/playlist?list=PL8EC1756A7B1764F6))