diff --git a/lib/fluent/engine.rb b/lib/fluent/engine.rb
index 27fbd9dfd5..b73e1d3242 100644
--- a/lib/fluent/engine.rb
+++ b/lib/fluent/engine.rb
@@ -61,7 +61,6 @@ def initialize
     def init(system_config)
       @system_config = system_config
 
-      suppress_interval(system_config.emit_error_log_interval) unless system_config.emit_error_log_interval.nil?
       @suppress_config_dump = system_config.suppress_config_dump unless system_config.suppress_config_dump.nil?
       @without_source = system_config.without_source unless system_config.without_source.nil?
 
@@ -76,11 +75,6 @@ def log
       $log
     end
 
-    def suppress_interval(interval_time)
-      @suppress_emit_error_log_interval = interval_time
-      @next_emit_error_log_time = Time.now.to_i
-    end
-
     def parse_config(io, fname, basepath = Dir.pwd, v1_config = false)
       if fname =~ /\.rb$/
         require 'fluent/config/dsl'