diff --git a/libraries/GCS_MAVLink/GCS_Common.cpp b/libraries/GCS_MAVLink/GCS_Common.cpp
index 7cd9661839..eed08e4bf8 100644
--- a/libraries/GCS_MAVLink/GCS_Common.cpp
+++ b/libraries/GCS_MAVLink/GCS_Common.cpp
@@ -1596,7 +1596,7 @@ void GCS_MAVLINK::send_raw_imu()
 
     mavlink_msg_raw_imu_send(
         chan,
-        AP_HAL::micros(),
+        AP_HAL::micros64(),
         accel.x * 1000.0f / GRAVITY_MSS,
         accel.y * 1000.0f / GRAVITY_MSS,
         accel.z * 1000.0f / GRAVITY_MSS,