diff --git a/.rubocop_todo.yml b/.rubocop_todo.yml
index 4fbaef3f0..5040c9c19 100644
--- a/.rubocop_todo.yml
+++ b/.rubocop_todo.yml
@@ -248,7 +248,6 @@ Layout/SpaceAroundOperators:
 # Cop supports --auto-correct.
 Layout/SpaceBeforeComma:
   Exclude:
-    - 'lib/redmine/export/pdf.rb'
     - 'test/mocks/open_id_authentication_mock.rb'
 
 # Cop supports --auto-correct.
diff --git a/lib/redmine/export/pdf.rb b/lib/redmine/export/pdf.rb
index 2fff976fb..987f2b989 100644
--- a/lib/redmine/export/pdf.rb
+++ b/lib/redmine/export/pdf.rb
@@ -70,7 +70,7 @@ module Redmine
           Redmine::WikiFormatting.to_html(Setting.text_formatting, text)
         end
 
-        def RDMCell(w ,h=0, txt='', border=0, ln=0, align='', fill=0, link='')
+        def RDMCell(w, h=0, txt='', border=0, ln=0, align='', fill=0, link='')
           cell(w, h, txt, border, ln, align, fill, link)
         end