diff --git a/.rubocop_todo.yml b/.rubocop_todo.yml
index b5e687f..4efbae3 100644
--- a/.rubocop_todo.yml
+++ b/.rubocop_todo.yml
@@ -111,13 +111,6 @@ Style/BlockDelimiters:
   Exclude:
     - 'lib/sharepoint/client.rb'
 
-# This cop supports safe autocorrection (--autocorrect).
-# Configuration parameters: EnforcedStyle.
-# SupportedStyles: is_a?, kind_of?
-Style/ClassCheck:
-  Exclude:
-    - 'lib/sharepoint/client.rb'
-
 Style/DocumentDynamicEvalDefinition:
   Exclude:
     - 'lib/sharepoint/client.rb'
diff --git a/lib/sharepoint/client.rb b/lib/sharepoint/client.rb
index ff54456..6824dd0 100644
--- a/lib/sharepoint/client.rb
+++ b/lib/sharepoint/client.rb
@@ -592,7 +592,7 @@ def string_not_blank?(object)
     def valid_config_uri?
       if @config.uri and @config.uri.is_a? String
         uri = URI.parse(@config.uri)
-        uri.kind_of?(URI::HTTP) || uri.kind_of?(URI::HTTPS)
+        uri.is_a?(URI::HTTP) || uri.is_a?(URI::HTTPS)
       else
         false
       end