diff --git a/app/services/dunlop/file_sed.rb b/app/services/dunlop/file_sed.rb
index de70003..771395f 100644
--- a/app/services/dunlop/file_sed.rb
+++ b/app/services/dunlop/file_sed.rb
@@ -14,6 +14,7 @@ module Dunlop::FileSed
   end
 
   def self.fix_line_endings(filename)
+    return if filename.to_s.end_with?('.xlsx')
     %x[dos2unix -f #{filename} > /dev/null 2>&1]
     raise 'error in dos2unix command line' unless $?.exitstatus == 0
     %x[dos2unix -f -c mac #{filename} > /dev/null 2>&1]