diff --git a/Makefile b/Makefile
index 00f77a7a..2480ad91 100644
--- a/Makefile
+++ b/Makefile
@@ -105,7 +105,7 @@ run: burn wait logs
 # This currently only works on macOS with a BMP debugger attached.
 # It's meant to flash the bootloader in a loop.
 BMP = $(shell ls -1 /dev/cu.usbmodem* | head -1)
-BMP_ARGS = --nx -ex "set mem inaccessible-by-default off" -ex "set confirm off" -ex "target extended-remote $(BMP)" -ex "mon swdp_scan" -ex "attach 1"
+BMP_ARGS = --nx -ex "set mem inaccessible-by-default off" -ex "set confirm off" -ex "target extended-remote $(BMP)" -ex "mon tpwr enable" -ex "mon swdp_scan" -ex "attach 1"
 GDB = arm-none-eabi-gdb
 
 bmp-flash: $(BUILD_PATH)/$(NAME).bin