diff --git a/libraries/AP_HAL_ChibiOS/hwdef/f303-periph/hwdef.dat b/libraries/AP_HAL_ChibiOS/hwdef/f303-periph/hwdef.dat
index 444b52fdf9..3ac36e584e 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/f303-periph/hwdef.dat
+++ b/libraries/AP_HAL_ChibiOS/hwdef/f303-periph/hwdef.dat
@@ -22,7 +22,7 @@ define HAL_WATCHDOG_ENABLED_DEFAULT true
 # crystal frequency
 OSCILLATOR_HZ 8000000
 
-define CH_CFG_ST_FREQUENCY 100000
+define CH_CFG_ST_FREQUENCY 1000
 define CH_CFG_ST_TIMEDELTA 0
 
 # assume the 256k flash part for now
@@ -107,7 +107,6 @@ define IO_THD_WA_SIZE      512
 
 define HAL_NO_GCS
 define HAL_NO_LOGGING
-//define HAL_NO_MONITOR_THREAD
 
 define HAL_MINIMIZE_FEATURES 0
 
@@ -140,4 +139,4 @@ RAM_RESERVE_START 256
 env ROMFS_UNCOMPRESSED True
 
 # reduce the number of CAN RX Buffer
-define HAL_CAN_RX_QUEUE_SIZE 32
\ No newline at end of file
+define HAL_CAN_RX_QUEUE_SIZE 64