diff --git a/free-courses-en.md b/free-courses-en.md
index de29a5346fdb47d823c64242c562902a4ea19f73..59a68b2bd9ffadd9a4f5be10de82228bacee6ce6 100644
--- a/free-courses-en.md
+++ b/free-courses-en.md
@@ -107,8 +107,6 @@
 * [Computer Graphics](http://nptel.ac.in/courses/106106090/)
 * [MIT´s Computer Language Engineering](http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-035-computer-language-engineering-sma-5502-fall-2005/lecture-notes/)
 * [MIT´s Mathematics for Computer Science](http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-042j-mathematics-for-computer-science-fall-2010/video-lectures/)
-* [MIT´s Introduction to Algorithms](http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-006-introduction-to-algorithms-fall-2011/)
-* [Stanford Cryptography I](https://www.coursera.org/course/crypto)
 
 
 ### OCaml