diff --git a/src/build_test_firmware.md b/src/build_test_firmware.md
index 2b43f08..7175c8b 100644
--- a/src/build_test_firmware.md
+++ b/src/build_test_firmware.md
@@ -39,10 +39,7 @@ Failure to comply with this voids the warranty.
 ```shell
 mkdir <variant>
 cd <variant>/
-#nix develop github:m-labs/artiq\?ref=release-8 # not working https://github.com/m-labs/artiq/issues/2439
-git clone https://github.com/m-labs/artiq.git
-cd artiq
-git checkout release-8
+nix develop github:m-labs/artiq\?ref=release-8#boards
 # master/standalone only
 artiq_mkfs -s ip 192.168.1.75 kasli.config
 artiq_flash storage -f kasli.config