diff --git a/lib/i18n/tasks/cli.rb b/lib/i18n/tasks/cli.rb
index bc97a0af..0fd76373 100644
--- a/lib/i18n/tasks/cli.rb
+++ b/lib/i18n/tasks/cli.rb
@@ -36,11 +36,12 @@ def start(argv)
   def run(argv)
     argv.each_with_index do |arg, i|
       if ['--config', '-c'].include?(arg)
-        if File.exist?(argv[i + 1])
-          @config_file = argv[i + 1]
+        _, config_file = argv.slice!(i, 2)
+        if File.exist?(config_file)
+          @config_file = config_file
           break
         else
-          error "Config file doesn't exist: #{argv[i + 1]}", 128
+          error "Config file doesn't exist: #{config_file}", 128
         end
       end
     end