diff --git a/lib/fluent/plugin_helper/http_server.rb b/lib/fluent/plugin_helper/http_server.rb
index 3ca9be5405..96de327774 100644
--- a/lib/fluent/plugin_helper/http_server.rb
+++ b/lib/fluent/plugin_helper/http_server.rb
@@ -46,6 +46,11 @@ def initialize(*)
         @_http_server = nil
       end
 
+      def create_http_server(title, addr:, port:, logger:, default_app: nil, proto: nil, tls_opts: nil, &block)
+        logger.warn('this method is deprecated. Use #http_server_create_http_server instead')
+        http_server_create_http_server(title, addr: addr, port: port, logger: logger, default_app: default_app, proto: proto, tls_opts: tls_opts, &block)
+      end
+
       # @param title [Symbol] the thread name. this value should be unique.
       # @param addr [String] Listen address
       # @param port [String] Listen port
@@ -53,7 +58,7 @@ def initialize(*)
       # @param default_app [Object] This method must have #call.
       # @param proto [Symbol] :tls or :tcp
       # @param tls_opts [Hash] options for TLS.
-      def create_http_server(title, addr:, port:, logger:, default_app: nil, proto: nil, tls_opts: nil, &block)
+      def http_server_create_http_server(title, addr:, port:, logger:, default_app: nil, proto: nil, tls_opts: nil, &block)
         unless block_given?
           raise ArgumentError, 'BUG: callback not specified'
         end
diff --git a/test/plugin_helper/test_http_server_helper.rb b/test/plugin_helper/test_http_server_helper.rb
index fc15b14300..40c5e9c7b8 100644
--- a/test/plugin_helper/test_http_server_helper.rb
+++ b/test/plugin_helper/test_http_server_helper.rb
@@ -179,7 +179,7 @@ def start_https_request(addr, port, verify: true, cert_path: nil, selfsigned: tr
   sub_test_case 'Create a HTTP server' do
     test 'monunt given path' do
       on_driver do |driver|
-        driver.create_http_server(:http_server_helper_test, addr: '127.0.0.1', port: PORT, logger: NULL_LOGGER) do |s|
+        driver.http_server_create_http_server(:http_server_helper_test, addr: '127.0.0.1', port: PORT, logger: NULL_LOGGER) do |s|
           s.get('/example/hello') { [200, { 'Content-Type' => 'text/plain' }, 'hello get'] }
           s.post('/example/hello') { [200, { 'Content-Type' => 'text/plain' }, 'hello post'] }
           s.head('/example/hello') { [200, { 'Content-Type' => 'text/plain' }, 'hello head'] }
@@ -214,7 +214,7 @@ def start_https_request(addr, port, verify: true, cert_path: nil, selfsigned: tr
 
     test 'when path does not start with `/` or ends with `/`' do
       on_driver do |driver|
-        driver.create_http_server(:http_server_helper_test, addr: '127.0.0.1', port: PORT, logger: NULL_LOGGER) do |s|
+        driver.http_server_create_http_server(:http_server_helper_test, addr: '127.0.0.1', port: PORT, logger: NULL_LOGGER) do |s|
           s.get('example/hello') { [200, { 'Content-Type' => 'text/plain' }, 'hello get'] }
           s.get('/example/hello2/') { [200, { 'Content-Type' => 'text/plain' }, 'hello get'] }
         end
@@ -229,7 +229,7 @@ def start_https_request(addr, port, verify: true, cert_path: nil, selfsigned: tr
 
     test 'when error raised' do
       on_driver do |driver|
-        driver.create_http_server(:http_server_helper_test, addr: '127.0.0.1', port: PORT, logger: NULL_LOGGER) do |s|
+        driver.http_server_create_http_server(:http_server_helper_test, addr: '127.0.0.1', port: PORT, logger: NULL_LOGGER) do |s|
           s.get('/example/hello') { raise 'error!' }
         end
 
@@ -240,7 +240,7 @@ def start_https_request(addr, port, verify: true, cert_path: nil, selfsigned: tr
 
     test 'when path is not found' do
       on_driver do |driver|
-        driver.create_http_server(:http_server_helper_test, addr: '127.0.0.1', port: PORT, logger: NULL_LOGGER) do |s|
+        driver.http_server_create_http_server(:http_server_helper_test, addr: '127.0.0.1', port: PORT, logger: NULL_LOGGER) do |s|
           s.get('/example/hello') { [200, { 'Content-Type' => 'text/plain' }, 'hello get'] }
         end
 
@@ -251,7 +251,7 @@ def start_https_request(addr, port, verify: true, cert_path: nil, selfsigned: tr
 
     test 'params and body' do
       on_driver do |driver|
-        driver.create_http_server(:http_server_helper_test, addr: '127.0.0.1', port: PORT, logger: NULL_LOGGER) do |s|
+        driver.http_server_create_http_server(:http_server_helper_test, addr: '127.0.0.1', port: PORT, logger: NULL_LOGGER) do |s|
           s.get('/example/hello') do |req|
             assert_equal(req.query_string, nil)
             assert_equal(req.body, nil)
@@ -390,7 +390,7 @@ def start_https_request(addr, port, verify: true, cert_path: nil, selfsigned: tr
         end
 
         stub(Fluent::PluginHelper::HttpServer::Server).new(anything) { server }
-        driver.create_http_server(:http_server_helper_test, addr: '127.0.0.1', port: PORT, logger: NULL_LOGGER) do
+        driver.http_server_create_http_server(:http_server_helper_test, addr: '127.0.0.1', port: PORT, logger: NULL_LOGGER) do
           # nothing
         end
         driver.stop