diff --git a/src/fluent-plugin-mdsd/lib/fluent/plugin/out_mdsd.rb b/src/fluent-plugin-mdsd/lib/fluent/plugin/out_mdsd.rb
index 62bb60d..661dcd8 100755
--- a/src/fluent-plugin-mdsd/lib/fluent/plugin/out_mdsd.rb
+++ b/src/fluent-plugin-mdsd/lib/fluent/plugin/out_mdsd.rb
@@ -144,6 +144,7 @@ def initialize(logger)
             "Bignum" => "FT_INT64",
             "Float" => "FT_DOUBLE",
             "Time" => "FT_TIME",
+            "Fluent::EventTime" => "FT_TIME",
             "String" => "FT_STRING"
         }