diff --git a/courses/free-courses-en.md b/courses/free-courses-en.md
index 5e3613568..fa87647ca 100644
--- a/courses/free-courses-en.md
+++ b/courses/free-courses-en.md
@@ -348,6 +348,7 @@
 * [MIT's Introduction to Computer Science and Programming](https://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-00sc-introduction-to-computer-science-and-programming-spring-2011/) - John Guttag (MIT OpenCourseWare)
 * [MIT's Introduction to Computer Science and Programming in Python](https://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-0001-introduction-to-computer-science-and-programming-in-python-fall-2016/) - Ana Bell, Eric Grimson, John Guttag (MIT OpenCourseWare)
 * [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/)
+* [System Design](https://www.youtube.com/playlist?list=PLMCXHnjXnTnvo6alSjVkgxV-VH6EPyvoX) - Gaurav Sen
 
 
 ### Cuda
diff --git a/courses/free-courses-hi.md b/courses/free-courses-hi.md
index 5c91ea87f..c9a21ca2b 100644
--- a/courses/free-courses-hi.md
+++ b/courses/free-courses-hi.md
@@ -406,7 +406,6 @@
 ### System Design
 
 * [System Analysis and Design](https://www.youtube.com/playlist?list=PLi81x6d2Os_8Sa8HifiFruWK6wmgG3Wrg) - Gursimran Singh Dhillon
-* [System Design](https://www.youtube.com/playlist?list=PLMCXHnjXnTnvo6alSjVkgxV-VH6EPyvoX) - Gaurav Sen
 * [System Design Primer Course](https://www.youtube.com/playlist?list=PLTCrU9sGyburBw9wNOHebv9SjlE4Elv5a) - sudoCODE