diff --git a/app/controllers/api/v1/results_controller.rb b/app/controllers/api/v1/results_controller.rb
index ccb51a6b3..f0dfcfa96 100644
--- a/app/controllers/api/v1/results_controller.rb
+++ b/app/controllers/api/v1/results_controller.rb
@@ -96,7 +96,7 @@ module Api
         end
         file_tokens = prms.map { |p| p[:attributes][:file_token] }
         result_text_params[:text].scan(
-          /data-token="(\w+)"/
+          /data-mce-token="(\w+)"/
         ).flatten.each do |token|
           unless file_tokens.include?(token)
             raise ActiveRecord::RecordInvalid,
diff --git a/spec/requests/api/v1/results_controller_spec.rb b/spec/requests/api/v1/results_controller_spec.rb
index e815c8080..97a7250b3 100644
--- a/spec/requests/api/v1/results_controller_spec.rb
+++ b/spec/requests/api/v1/results_controller_spec.rb
@@ -128,7 +128,7 @@ RSpec.describe "Api::V1::ResultsController", type: :request do
             attributes: {
               text: 'Result text 1 <img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAIAA'\
                          'AACCAIAAAD91JpzAAAACXBIWXMAAC4jAAAuIwF4pT92AAAAE0lE'\
-                         'QVQIHWP8//8/AwMDExADAQAkBgMBOOSShwAAAABJRU5ErkJggg==" data-token="a1">'
+                         'QVQIHWP8//8/AwMDExADAQAkBgMBOOSShwAAAABJRU5ErkJggg==" data-mce-token="a1">'
             } },
           { type: 'tiny_mce_assets',
             attributes: {