diff --git a/app/boards/arm/bdn9/bdn9_rev2.yaml b/app/boards/arm/bdn9/bdn9_rev2.yaml
index bbae8833..b0c73e6f 100644
--- a/app/boards/arm/bdn9/bdn9_rev2.yaml
+++ b/app/boards/arm/bdn9/bdn9_rev2.yaml
@@ -3,12 +3,12 @@ name: keeb.io BDN9
 type: mcu
 arch: arm
 toolchain:
-  - zephyr
-  - gnuarmemb
-  - xtools
+- zephyr
+- gnuarmemb
+- xtools
 ram: 40
 supported:
-  - encoders
-  - switches
-  - underglow
-  - per_key
+- encoders
+- switches
+- underglow
+- per_key