diff --git a/lib/aws-record/record/client_configuration.rb b/lib/aws-record/record/client_configuration.rb
index c8279a8..15a015e 100644
--- a/lib/aws-record/record/client_configuration.rb
+++ b/lib/aws-record/record/client_configuration.rb
@@ -25,14 +25,12 @@ module ClientConfiguration
       # @option opts [Aws::DynamoDB::Client] :client allows you to pass in your
       #  own pre-configured client.
       def configure_client(opts = {})
-        # rubocop:disable Style/RedundantSelf
         @dynamodb_client = if self.class != Module && Aws::Record.extends_record?(self) && opts.empty? &&
-                              self.superclass.instance_variable_get('@dynamodb_client')
-                             self.superclass.instance_variable_get('@dynamodb_client')
+                              superclass.instance_variable_get('@dynamodb_client')
+                             superclass.instance_variable_get('@dynamodb_client')
                            else
                              _build_client(opts)
                            end
-        # rubocop:enable Style/RedundantSelf
       end
 
       # Gets the
diff --git a/lib/aws-record/record/transactions.rb b/lib/aws-record/record/transactions.rb
index 90f194e..b678026 100644
--- a/lib/aws-record/record/transactions.rb
+++ b/lib/aws-record/record/transactions.rb
@@ -258,8 +258,8 @@ def _transform_save_record(save_record, opts)
                     'currently supported. You should rewrite this case to use ' \
                     'a :put transaction, adding the existence check to your ' \
                     "own condition expression if desired.\n" \
-                    "\tItem: #{JSON.pretty_unparse(save_record.to_h)}\n" \
-                    "\tExtra Options: #{JSON.pretty_unparse(opts)}"
+                    "\tItem: #{JSON.pretty_generate(save_record.to_h)}\n" \
+                    "\tExtra Options: #{JSON.pretty_generate(opts)}"
             else
               opts = opts.merge(safety_expression)
               _transform_put_record(save_record, opts)