diff --git a/nrf5/boards/microbit/mpconfigboard_s110.mk b/nrf5/boards/microbit/mpconfigboard_s110.mk
index 54766bd429..0cd554415f 100644
--- a/nrf5/boards/microbit/mpconfigboard_s110.mk
+++ b/nrf5/boards/microbit/mpconfigboard_s110.mk
@@ -1,4 +1,5 @@
 MCU_SERIES = m0
 MCU_VARIANT = nrf51
-LD_FILE = boards/nrf51822_ac_s110.ld
-
+MCU_SUB_VARIANT = nrf51822
+LD_FILE = boards/nrf51822_aa_s110.ld
+FLASHER = pyocd