diff --git a/src/modules/mavlink/mavlink_receiver.cpp b/src/modules/mavlink/mavlink_receiver.cpp
index d84b70e46a..97108270c5 100644
--- a/src/modules/mavlink/mavlink_receiver.cpp
+++ b/src/modules/mavlink/mavlink_receiver.cpp
@@ -969,7 +969,7 @@ MavlinkReceiver::handle_message_timesync(mavlink_message_t *msg)
 	mavlink_timesync_t tsync;
 	mavlink_msg_timesync_decode(msg, &tsync);
 
-	uint64_t now_ns = hrt_absolute_time() * 1000 ;
+	uint64_t now_ns = hrt_absolute_time() * 1000LL ;
 
 	if (tsync.tc1 == 0) {
 
@@ -984,13 +984,12 @@ MavlinkReceiver::handle_message_timesync(mavlink_message_t *msg)
 
 	} else if (tsync.tc1 > 0) {
 
-		int64_t offset_ns = (9*_time_offset + (tsync.ts1 + now_ns - tsync.tc1*2)/2 )/10; // average offset
+		int64_t offset_ns = (tsync.ts1 + now_ns - tsync.tc1*2)/2 ; 
 		int64_t dt = _time_offset - offset_ns;
 
 		if (dt > 10000000LL || dt < -10000000LL) { // 10 millisecond skew 
-			_time_offset = (tsync.ts1 + now_ns - tsync.tc1*2)/2; 
-			warnx("[timesync] Resetting offset sync.");
-
+			_time_offset = offset_ns;
+			warnx("[timesync] Hard setting offset.");
 		} else {
 			smooth_time_offset(offset_ns);
 		}
@@ -1473,7 +1472,7 @@ uint64_t MavlinkReceiver::to_hrt(uint64_t usec)
 
 void MavlinkReceiver::smooth_time_offset(uint64_t offset_ns)
 {
-	/* alpha = 0.75 fixed for now. The closer alpha is to 1.0,
+	/* alpha = 0.6 fixed for now. The closer alpha is to 1.0,
          * the faster the moving average updates in response to
 	 * new offset samples.
 	 */