diff --git a/app/services/dunlop/file_sed.rb b/app/services/dunlop/file_sed.rb
index 771395f..5962576 100644
--- a/app/services/dunlop/file_sed.rb
+++ b/app/services/dunlop/file_sed.rb
@@ -15,10 +15,10 @@ module Dunlop::FileSed
 
   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]
-    raise 'error in dos2unix command line' unless $?.exitstatus == 0
+    res = %x[dos2unix -f #{filename} > /dev/null 2>&1]
+    raise "error in dos2unix command line (#{res})" unless $?.exitstatus == 0
+    res = %x[dos2unix -f -c mac #{filename} > /dev/null 2>&1]
+    raise "error in dos2unix command line mac (#{res})" unless $?.exitstatus == 0
   end
 
 end