diff --git a/app/boards/arm/bdn9/bdn9_rev2.conf b/app/boards/arm/bdn9/bdn9_rev2.conf
index 36910853..f6506a06 100644
--- a/app/boards/arm/bdn9/bdn9_rev2.conf
+++ b/app/boards/arm/bdn9/bdn9_rev2.conf
@@ -1,5 +1,9 @@
 # Copyright (c) 2022 The ZMK Contributors
 # SPDX-License-Identifier: MIT
 
+# Uncomment these lines below to enable encoders.
+# CONFIG_EC11=y
+# CONFIG_EC11_TRIGGER_GLOBAL_THREAD=y
+
 # Uncomment the line below to enable RGB.
 # CONFIG_ZMK_RGB_UNDERGLOW=y