diff --git a/boards/sim/sim/sim/configs/btuart/defconfig b/boards/sim/sim/sim/configs/btuart/defconfig
index 8b656d2e33e..13a94cc263d 100644
--- a/boards/sim/sim/sim/configs/btuart/defconfig
+++ b/boards/sim/sim/sim/configs/btuart/defconfig
@@ -5,6 +5,7 @@
 # You can then do "make savedefconfig" to generate a new defconfig file that includes your
 # modifications.
 #
+CONFIG_ALLOW_BSD_COMPONENTS=y
 CONFIG_ARCH="sim"
 CONFIG_ARCH_BOARD="sim"
 CONFIG_ARCH_BOARD_SIM=y