diff --git a/lib/quby/compiler/instance.rb b/lib/quby/compiler/instance.rb
index 746da0b0b70a279c264d54b5bd714e7570033283..104be626c3f6ed825d9ea11aa76f3e86306aba27 100644
--- a/lib/quby/compiler/instance.rb
+++ b/lib/quby/compiler/instance.rb
@@ -36,7 +36,7 @@ module Quby
             roqua: Output.new(
               key: :roqua,
               filename: "roqua.json",
-              content: JSON.pretty_generate(Outputs::RoquaSerializer.new(questionnaire).as_json)
+              content: Outputs::RoquaSerializer.new(questionnaire).to_json,
             ),
             seeds: Output.new(
               key: :seeds,
@@ -46,7 +46,7 @@ module Quby
             quby_frontend_v1: Output.new(
               key: :quby_frontend_v1,
               filename: "quby-frontend-v1.json",
-              content: JSON.pretty_generate(Outputs::QubyFrontendV1Serializer.new(questionnaire).as_json),
+              content: Outputs::QubyFrontendV1Serializer.new(questionnaire).to_json,
             ),
             quby_frontend_v2: Output.new(
               key: :quby_frontend_v2,