diff --git a/libraries/AP_GPS/AP_GPS_SBP.cpp b/libraries/AP_GPS/AP_GPS_SBP.cpp
index 53dd75938e..e12bc821a7 100644
--- a/libraries/AP_GPS/AP_GPS_SBP.cpp
+++ b/libraries/AP_GPS/AP_GPS_SBP.cpp
@@ -402,7 +402,7 @@ AP_GPS_SBP::_detect(struct SBP_detect_state &state, uint8_t data)
 
 struct PACKED log_SbpLLH {
     LOG_PACKET_HEADER;
-    uint32_t timestamp;
+    uint64_t time_us;
     uint32_t tow;
     int32_t  lat;
     int32_t  lon;