diff --git a/wc.rb b/wc.rb
index 21bde5f..afd18d6 100644
--- a/wc.rb
+++ b/wc.rb
@@ -10,7 +10,8 @@ def parse_options
     opts.on('-c') { options[:bytes] = true }
   end.parse!
   options = { bytes: true, lines: true, words: true } if options.empty?
-  [options, ARGV.empty? ? ['-'] : ARGV]
+  sources = ARGV.empty? ? ['-'] : ARGV
+  [options, sources]
 end
 
 def input_stream_sources(input_sources, options)