1 files changed, 7 insertions, 7 deletions

diff --git a/lib/axlsx/package.rb b/lib/axlsx/package.rb
index 26f838f8..34add29b 100644
--- a/lib/axlsx/package.rb
+++ b/lib/axlsx/package.rb
@@ -33,7 +33,7 @@ module Axlsx
     # Shortcut to specify that the workbook should use autowidth
     # @see Workbook#use_autowidth
     def use_autowidth=(v)
-      Axlsx::validate_boolean(v)
+      Axlsx.validate_boolean(v)
       workbook.use_autowidth = v
     end
 
@@ -46,7 +46,7 @@ module Axlsx
     # Shortcut to specify that the workbook should use shared strings
     # @see Workbook#use_shared_strings
     def use_shared_strings=(v)
-      Axlsx::validate_boolean(v)
+      Axlsx.validate_boolean(v)
       workbook.use_shared_strings = v
     end
 
@@ -101,12 +101,12 @@ module Axlsx
     #   s = p.to_stream()
     #   File.open('example_streamed.xlsx', 'wb') { |f| f.write(s.read) }
     def serialize(output, options = {}, secondary_options = nil)
-      if !workbook.styles_applied
+      unless workbook.styles_applied
         workbook.apply_styles
       end
 
       confirm_valid, zip_command = parse_serialize_options(options, secondary_options)
-      return false unless !confirm_valid || self.validate.empty?
+      return false unless !confirm_valid || validate.empty?
 
       zip_provider = if zip_command
                        ZipCommand.new(zip_command)
@@ -126,11 +126,11 @@ module Axlsx
     # @param [Boolean] confirm_valid Validate the package prior to serialization.
     # @return [StringIO|Boolean] False if confirm_valid and validation errors exist. rewound string IO if not.
     def to_stream(confirm_valid = false)
-      if !workbook.styles_applied
+      unless workbook.styles_applied
         workbook.apply_styles
       end
 
-      return false unless !confirm_valid || self.validate.empty?
+      return false unless !confirm_valid || validate.empty?
 
       Relationship.initialize_ids_cache
       stream = BufferedZipOutputStream.write_buffer do |zip|
@@ -266,7 +266,7 @@ module Axlsx
       [
         { entry: CONTENT_TYPES_PN, doc: content_types, schema: CONTENT_TYPES_XSD },
         { entry: RELS_PN, doc: relationships, schema: RELS_XSD },
-        *(parts.sort_by { |part| part[:entry] }.reverse)
+        *parts.sort_by { |part| part[:entry] }.reverse
       ]
     end