diff --git a/rswag-specs/lib/rswag/specs/swagger_formatter.rb b/rswag-specs/lib/rswag/specs/swagger_formatter.rb
index 94ff6eb..7fb9e61 100644
--- a/rswag-specs/lib/rswag/specs/swagger_formatter.rb
+++ b/rswag-specs/lib/rswag/specs/swagger_formatter.rb
@@ -135,7 +135,8 @@ module Rswag
 
         mime_list.each do |mime_type|
           # TODO upgrade to have content-type specific schema
-          target_node[:content][mime_type] = { schema: schema }
+          target_node[:content][mime_type] = {} if target_node[:content][mime_type].nil?
+          target_node[:content][mime_type][:schema] = schema
         end
       end