diff --git a/app/serializers/nodeinfo/serializer.rb b/app/serializers/nodeinfo/serializer.rb
index afae7f00a..f70cc38f0 100644
--- a/app/serializers/nodeinfo/serializer.rb
+++ b/app/serializers/nodeinfo/serializer.rb
@@ -38,7 +38,7 @@ class NodeInfo::Serializer < ActiveModel::Serializer
   end
 
   def metadata
-    []
+    {}
   end
 
   private