diff --git a/ex17-ec.rb b/ex17-ec.rb
index b4c5170..5169d0b 100644
--- a/ex17-ec.rb
+++ b/ex17-ec.rb
@@ -1,5 +1 @@
-File.open(ARGV.first) do |infile|
-  File.open(ARGV[1], 'w') do |outfile|
-    outfile.write(infile.read)
-  end
-end
+File.open(ARGV.first) { |i| File.open(ARGV[1], 'w') { |o| o.write(i.read) }}