Update README.md

diff --git a/README.md b/README.md
index ffb9eb26407370fd47eb578b60666415c042e9d0..ce54314252989ef83378bc0e1a45f4212eaa59b2 100644 (file)
--- a/README.md
+++ b/README.md
@@ -6,9 +6,9 @@ If you just want to use the program you can download the binary file from the [r
 2. Plug your Nucleo boart to the PC.
 3. Copy and paste the .bin file inside your board.
 
-The main program is located in [otto_controller_source](https://github.com/iralabdisco/otto/tree/otto_controller_source).
+The main program is located in [otto_controller_source](https://github.com/iralabdisco/otto/tree/master/otto_controller_source).
 
-You can find various useful tools inside the [utils](https://github.com/iralabdisco/otto/tree/utils) folder.
+You can find various useful tools inside the [utils](https://github.com/iralabdisco/otto/tree/master/utils) folder.
 
 See the [wiki](https://github.com/iralabdisco/otto/wiki) for more info about this projects.