diff --git a/app/models/digital_status.rb b/app/models/digital_status.rb
index a9c5d17d..78920f76 100644
--- a/app/models/digital_status.rb
+++ b/app/models/digital_status.rb
@@ -1,15 +1,14 @@
 class DigitalStatus < ActiveRecord::Base
 	require 'json/ext'
 
-	serialize :options, Hash
-	serialize :options_json, JSON
+	serialize :options, JSON
 	belongs_to :physical_object
 	validates :physical_object, presence: true
 	validates :physical_object_mdpi_barcode, presence: true
 	before_validation :set_mdpi_barcode_from_object
 
 	DIGITAL_STATUS_START = "transferred"
-        serialized_empty_hash = {}.to_yaml.to_s
+        serialized_empty_hash = {}.to_json.to_s
 	# the number of hours after digitization start that a video physical object is auto-accepted
 	@@Video_File_Auto_Accept = TechnicalMetadatumModule::GENRE_AUTO_ACCEPT_DAYS[:video] * 24
 	# the number of hours after digitization start that an audio physical object is auto-accepted
diff --git a/app/models/memnon_invoice_submission.rb b/app/models/memnon_invoice_submission.rb
index 2c779e65..5adf80fb 100644
--- a/app/models/memnon_invoice_submission.rb
+++ b/app/models/memnon_invoice_submission.rb
@@ -1,5 +1,4 @@
 class MemnonInvoiceSubmission < ActiveRecord::Base
-	serialize :problems_by_row
-	serialize :problems_by_row_json, JSON
+	serialize :problems_by_row, JSON
 	validates :filename, presence: true
 end