diff --git a/.rubocop_todo.yml b/.rubocop_todo.yml
index 0921d4f73..6dbcbaeba 100644
--- a/.rubocop_todo.yml
+++ b/.rubocop_todo.yml
@@ -2050,15 +2050,6 @@ Style/OptionalBooleanParameter:
     - 'app/workers/unfollow_follow_worker.rb'
     - 'lib/mastodon/redis_config.rb'
 
-# Offense count: 5
-# This cop supports unsafe autocorrection (--autocorrect-all).
-# Configuration parameters: Methods.
-Style/RedundantArgument:
-  Exclude:
-    - 'app/controllers/concerns/signature_verification.rb'
-    - 'app/helpers/application_helper.rb'
-    - 'lib/tasks/emojis.rake'
-
 # Offense count: 16
 # This cop supports safe autocorrection (--autocorrect).
 Style/RedundantRegexpCharacterClass:
diff --git a/app/controllers/concerns/signature_verification.rb b/app/controllers/concerns/signature_verification.rb
index b0a087d53..931725943 100644
--- a/app/controllers/concerns/signature_verification.rb
+++ b/app/controllers/concerns/signature_verification.rb
@@ -138,7 +138,7 @@ module SignatureVerification
   end
 
   def signed_headers
-    signature_params.fetch('headers', signature_algorithm == 'hs2019' ? '(created)' : 'date').downcase.split(' ')
+    signature_params.fetch('headers', signature_algorithm == 'hs2019' ? '(created)' : 'date').downcase.split
   end
 
   def verify_signature_strength!
diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index 08020a65a..9dc8bba2d 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -112,7 +112,7 @@ module ApplicationHelper
   def fa_icon(icon, attributes = {})
     class_names = attributes[:class]&.split(' ') || []
     class_names << 'fa'
-    class_names += icon.split(' ').map { |cl| "fa-#{cl}" }
+    class_names += icon.split.map { |cl| "fa-#{cl}" }
 
     content_tag(:i, nil, attributes.merge(class: class_names.join(' ')))
   end
@@ -164,7 +164,7 @@ module ApplicationHelper
   end
 
   def body_classes
-    output = (@body_classes || '').split(' ')
+    output = (@body_classes || '').split
     output << "theme-#{current_theme.parameterize}"
     output << 'system-font' if current_account&.user&.setting_system_font_ui
     output << (current_account&.user&.setting_reduce_motion ? 'reduce-motion' : 'no-reduce-motion')
diff --git a/lib/tasks/emojis.rake b/lib/tasks/emojis.rake
index c743f8a55..fbb2e8d4f 100644
--- a/lib/tasks/emojis.rake
+++ b/lib/tasks/emojis.rake
@@ -6,7 +6,7 @@ def gen_border(codepoint, color)
   doc = File.open(input) { |f| Nokogiri::XML(f) }
   svg = doc.at_css('svg')
   if svg.key?('viewBox')
-    view_box = svg['viewBox'].split(' ').map(&:to_i)
+    view_box = svg['viewBox'].split.map(&:to_i)
     view_box[0] -= 2
     view_box[1] -= 2
     view_box[2] += 4
@@ -36,7 +36,7 @@ end
 
 def codepoints_to_unicode(codepoints)
   if codepoints.include?(' ')
-    codepoints.split(' ').map(&:hex).pack('U*')
+    codepoints.split.map(&:hex).pack('U*')
   else
     [codepoints.hex].pack('U')
   end