diff --git a/src/drivers/boards/px4esc-v1/bootloader/CMakeLists.txt b/src/drivers/boards/px4esc-v1/bootloader/CMakeLists.txt
index 19aa2e8e29..a2bc84546f 100644
--- a/src/drivers/boards/px4esc-v1/bootloader/CMakeLists.txt
+++ b/src/drivers/boards/px4esc-v1/bootloader/CMakeLists.txt
@@ -52,6 +52,7 @@ px4_add_module(
 		../../common/stm32/board_identity.c
 		${px4_bootloader_base}src/uavcan/main.c
 		${px4_bootloader_base}src/common/boot_app_shared.c
+		${px4_bootloader_base}src/common/nuttx_stubs.c
 		${px4_bootloader_base}src/sched/timer.c
 		${px4_bootloader_base}src/fs/flash.c
 		${px4_bootloader_base}src/util/crc.c