diff --git a/mk/px4_targets.mk b/mk/px4_targets.mk
index c227871178..112dc92ef6 100644
--- a/mk/px4_targets.mk
+++ b/mk/px4_targets.mk
@@ -110,6 +110,7 @@ px4-v4: $(BUILDROOT)/make.flags CHECK_MODULES $(MAVLINK_HEADERS) $(PX4_ROOT)/Arc
 	$(PX4_MAKE) px4fmu-v4_APM
 	$(v) arm-none-eabi-size $(PX4_ROOT)/Build/px4fmu-v4_APM.build/firmware.elf
 	$(v) cp $(PX4_ROOT)/Images/px4fmu-v4_APM.px4 $(SKETCH)-v4.px4
+	$(v) mkdir -p $(MK_DIR)/PX4/ROMFS/bootloader/
 	$(v) cp $(SKETCHBOOK)/mk/PX4/bootloader/px4fmuv4_bl.bin $(MK_DIR)/PX4/ROMFS/bootloader/fmu_bl.bin
 	$(v) $(SKETCHBOOK)/Tools/scripts/add_git_hashes.py $(HASHADDER_FLAGS) "$(SKETCH)-v4.px4" "$(SKETCH)-v4.px4"
 	$(v) echo "PX4 $(SKETCH) Firmware is in $(SKETCH)-v4.px4"