diff --git a/infer/src/atd/jsonbug.atd b/infer/src/atd/jsonbug.atd
index a4c0b9595..3e2fa23d7 100644
--- a/infer/src/atd/jsonbug.atd
+++ b/infer/src/atd/jsonbug.atd
@@ -58,6 +58,7 @@ type json_trace = {
 type hum_info = {
   hum_polynomial : string;
   hum_degree : string;
+  big_o : string;
 }
 
 type cost_item = {
@@ -65,7 +66,7 @@ type cost_item = {
   loc : loc;
   procedure_id : string;
   polynomial : string;
-  ?hum : hum_info option;
+  hum : hum_info;
 }
 
 type costs_report = cost_item list
diff --git a/infer/src/backend/InferPrint.ml b/infer/src/backend/InferPrint.ml
index f22848289..c968ab9ae 100644
--- a/infer/src/backend/InferPrint.ml
+++ b/infer/src/backend/InferPrint.ml
@@ -344,13 +344,12 @@ module JsonCostsPrinter = MakeJsonListPrinter (struct
     match cost_opt with
     | Some {post} ->
         let hum =
-          if Config.developer_mode then
-            Some
-              { Jsonbug_t.hum_polynomial=
-                  Format.asprintf "%a" CostDomain.BasicCost.pp post.basic_operation_cost
-              ; hum_degree=
-                  Format.asprintf "%a" CostDomain.BasicCost.pp_degree post.basic_operation_cost }
-          else None
+          { Jsonbug_t.hum_polynomial=
+              Format.asprintf "%a" CostDomain.BasicCost.pp post.basic_operation_cost
+          ; hum_degree=
+              Format.asprintf "%a" CostDomain.BasicCost.pp_degree post.basic_operation_cost
+          ; big_o=
+              Format.asprintf "%a" CostDomain.BasicCost.pp_degree_hum post.basic_operation_cost }
         in
         let cost_item =
           let file = SourceFile.to_rel_path loc.Location.file in