diff --git a/boot/zephyr/prj.conf b/boot/zephyr/prj.conf
index 1e6cda2..2ae9fb9 100644
--- a/boot/zephyr/prj.conf
+++ b/boot/zephyr/prj.conf
@@ -11,3 +11,6 @@
 CONFIG_HEAP_MEM_POOL_SIZE=16384
 
 CONFIG_FLASH=y
+
+### Disable Bluetooth by default
+# CONFIG_BLUETOOTH is not set