diff --git a/README.md b/README.md
index 019782b..6711bad 100644
--- a/README.md
+++ b/README.md
@@ -158,7 +158,7 @@ Courses | Duration | Effort
 Courses | Duration | Effort
 :-- | :--: | :--:
 [Operating System Engineering](http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-828-operating-system-engineering-fall-2012/)| - | -
-[Operating Systems and System Programming](https://www.youtube.com/watch?v=XgQo4JkN4Bw&list=PL3289DD0D0F0CD4A3)| - | -
+[Operating Systems and System Programming](https://www.youtube.com/watch?v=XgQo4JkN4Bw&list=PL3289DD0D0F0CD4A3)| 10 weeks | -
 
 ### Computer Networks
 
@@ -233,7 +233,7 @@ Courses | Duration | Effort
 
 Courses | Duration | Effort
 :-- | :--: | :--:
-[The Internet of Things](https://www.futurelearn.com/courses/internet-of-things)| 4 weeks | hours/week
+[The Internet of Things](https://www.futurelearn.com/courses/internet-of-things)| 4 weeks | 2 hours/week
 
 ## How to use this guide