diff --git a/cpp_src/events/serializer.h b/cpp_src/events/serializer.h
index 7a1aeadfd..dd55e6bdd 100644
--- a/cpp_src/events/serializer.h
+++ b/cpp_src/events/serializer.h
@@ -31,7 +31,7 @@ class UpdateSerializer {
 			ser_.PutVarint(opts.ServerID());
 		}
 		if (opts.IsWithTimestamp()) {
-			ser_.PutVarint(rec.Timestamp().time_since_epoch().count());
+			ser_.PutVarint(std::chrono::duration_cast<std::chrono::nanoseconds>(rec.Timestamp().time_since_epoch()).count());
 		}
 
 		// WrSerializer tmpSer;