diff --git a/lib/ebayr/request.rb b/lib/ebayr/request.rb
index <HASH>..<HASH> 100644
--- a/lib/ebayr/request.rb
+++ b/lib/ebayr/request.rb
@@ -108,9 +108,9 @@ module Ebayr #:nodoc:
     # Prepares an argument for input to an eBay Trading API XML call.
     # * Times are converted to ISO 8601 format
     def self.serialize_input(input)
-       case input
-         when Time then input.to_time.utc.iso8601
-         else input
+      case input
+        when Time then input.to_time.utc.iso8601
+        else input
       end
     end
Fixes indentation

according to [this](<URL>)
warning.