diff --git a/lib/fluent/time.rb b/lib/fluent/time.rb
index e535a027ab..8a4c12ac93 100644
--- a/lib/fluent/time.rb
+++ b/lib/fluent/time.rb
@@ -114,7 +114,8 @@ def self.eq?(a, b)
     def self.now
       # This method is called many time. so call Process.clock_gettime directly instead of Fluent::Clock.real_now
       now = Process.clock_gettime(Process::CLOCK_REALTIME, :nanosecond)
-      Fluent::EventTime.new(now / 1_000_000_000, now % 1_000_000_000)
+      sec, nsec = now.divmod(1_000_000_000)
+      Fluent::EventTime.new(sec, nsec)
     end
 
     def self.parse(*args)