diff --git a/CODINGSTYLE.md b/CODINGSTYLE.md
index e6c33f8891..765f77dd31 100644
--- a/CODINGSTYLE.md
+++ b/CODINGSTYLE.md
@@ -1,4 +1,4 @@
 DOMjudge project coding style guideline
 =======================================
 
-We follow the [PSR-2 coding style](https://www.php-fig.org/psr/psr-2/).
+We follow the [PSR-12 coding style](https://www.php-fig.org/psr/psr-12/).