diff --git a/libraries/AP_HAL_ChibiOS/hwdef/common/chibios_board.mk b/libraries/AP_HAL_ChibiOS/hwdef/common/chibios_board.mk
index 893b358f54..9d30c86701 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/common/chibios_board.mk
+++ b/libraries/AP_HAL_ChibiOS/hwdef/common/chibios_board.mk
@@ -9,7 +9,7 @@ ifeq ($(USE_OPT),)
 endif
 
 ifeq ($(ENABLE_DEBUG_SYMBOLS), yes)
-  USE_OPT += -g
+  USE_OPT += -g3
 endif
 
 # C specific options here (added to USE_OPT).