diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index ca18e9988d..f852462d98 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -16,7 +16,7 @@ git checkout -b mydescriptivebranchname
 
 ### Edit and build the code
 
-The [developer guide](http://dev.px4.io/) explains how to set up the development environment on Mac OS, Linux or Windows. Please take note of our [coding style](http://dev.px4.io/en/contribute/code.html) when editing files.
+The [developer guide](http://dev.px4.io/) explains how to set up the development environment on Mac OS, Linux or Windows. Please take note of our [coding style](https://dev.px4.io/master/en/contribute/code.html) when editing files.
 
 ### Commit your changes