diff --git a/Gemfile.lock b/Gemfile.lock
index e49397a..b0bbb22 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -135,4 +135,4 @@ DEPENDENCIES
   yard (~> 0.9.11)
 
 BUNDLED WITH
-   1.16.3
+   1.15.4
diff --git a/lib/lgtm/error_handleable.rb b/lib/lgtm/error_handleable.rb
index 188d528..1625e31 100644
--- a/lib/lgtm/error_handleable.rb
+++ b/lib/lgtm/error_handleable.rb
@@ -1,5 +1,5 @@
 module Lgtm
-  # ErrorHandleable of module of error handling
+  # ErrorHandleable is module of error handling
   module ErrorHandleable
     # 4xx http status.
     CLIENT_ERRORS = [
@@ -15,7 +15,8 @@ module ErrorHandleable
       Net::HTTPGatewayTimeOut
     ].freeze
 
-    # validate_response is response validationg
+    # validate_response is response validating
+    #
     # @param [Net::HTTPxxx] response Net::HTTP responses
     # @raise ::Lgtm::Errors::UnexpectedError
     # @return [void]
diff --git a/lib/lgtm/plugin.rb b/lib/lgtm/plugin.rb
index e1dbed7..1b3fd29 100644
--- a/lib/lgtm/plugin.rb
+++ b/lib/lgtm/plugin.rb
@@ -28,6 +28,7 @@ class DangerLgtm < Plugin
     # @param  [Boolean] https_image_only https image only if true
     #
     # @return  [void]
+    #
     def check_lgtm(image_url: nil, https_image_only: false)
       return unless status_report[:errors].length.zero? &&
                     status_report[:warnings].length.zero?