diff --git a/libraries/AP_HAL_ChibiOS/hwdef/Here4AP/hwdef.dat b/libraries/AP_HAL_ChibiOS/hwdef/Here4AP/hwdef.dat
index d91a47cd1ee4a8..e3dfd4041cd40e 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/Here4AP/hwdef.dat
+++ b/libraries/AP_HAL_ChibiOS/hwdef/Here4AP/hwdef.dat
@@ -122,9 +122,9 @@ define GPS_MOVING_BASELINE 1
 define HAL_PERIPH_GPS_PORT_DEFAULT 3
 
 #PD11 GPS_TP1 OUTPUT HIGH GPIO(5)
-#PD7  GPS_PPS INPUT FLOATING GPIO(6)
-#define CONFIGURE_PPS_PIN TRUE
-#define HAL_GPIO_PPS 6
+PD7  GPS_PPS INPUT FLOATING GPIO(6)
+define CONFIGURE_PPS_PIN TRUE
+define HAL_GPIO_PPS 6
 
 # GPS enable pin
 # PD13 GPS_ENABLE OUTPUT HIGH GPIO(20)
@@ -132,3 +132,5 @@ define HAL_PERIPH_GPS_PORT_DEFAULT 3
 # for ProfiLed we need RC out and notify
 define HAL_PERIPH_ENABLE_RC_OUT
 define HAL_PERIPH_ENABLE_NOTIFY
+
+define HAL_PERIPH_ENABLE_GLOBALTIMESYNC 1