diff --git a/libraries/AP_HAL_ChibiOS/hwdef/SuccexF4/hwdef-bl.dat b/libraries/AP_HAL_ChibiOS/hwdef/SuccexF4/hwdef-bl.dat
index b58c077b67..092facce40 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/SuccexF4/hwdef-bl.dat
+++ b/libraries/AP_HAL_ChibiOS/hwdef/SuccexF4/hwdef-bl.dat
@@ -32,6 +32,11 @@ SERIAL_ORDER OTG1
 PA11 OTG_FS_DM OTG1
 PA12 OTG_FS_DP OTG1
 
+
+PA13 JTMS-SWDIO SWD
+PA14 JTCK-SWCLK SWD
+
+
 define HAL_USE_EMPTY_STORAGE 1
 define HAL_STORAGE_SIZE 15360