diff --git a/app/models/madmp_fragment.rb b/app/models/madmp_fragment.rb
index c4b8ab5..3b5b64c 100644
--- a/app/models/madmp_fragment.rb
+++ b/app/models/madmp_fragment.rb
@@ -359,6 +359,7 @@
   # Initialize the data field
   def set_defaults
     self.data ||= {}
+    self.additional_info ||= {}
   end
 
 end