diff --git a/src/core/plugins/err/error-transformers/hook.js b/src/core/plugins/err/error-transformers/hook.js
index 03809482..e4e3ae08 100644
--- a/src/core/plugins/err/error-transformers/hook.js
+++ b/src/core/plugins/err/error-transformers/hook.js
@@ -9,7 +9,7 @@ const errorTransformers = [
 
 export default function transformErrors (errors) {
   // Dev note: unimplemented artifact where
-  // jsSpec: system.specSelectors.specJson().toJS()
+  // jsSpec: system.specSelectors.specJS()
   // regardless, to be compliant with redux@4, instead of calling the store method here,
   // jsSpec should be pass down as an argument,
   let inputs = {
diff --git a/src/core/plugins/spec/actions.js b/src/core/plugins/spec/actions.js
index b220d49b..57bfe39c 100644
--- a/src/core/plugins/spec/actions.js
+++ b/src/core/plugins/spec/actions.js
@@ -238,7 +238,7 @@ const debResolveSubtrees = debounce(async () => {
       }
     }, Promise.resolve({
       resultMap: (specSelectors.specResolvedSubtree([]) || Map()).toJS(),
-      specWithCurrentSubtrees: specSelectors.specJson().toJS()
+      specWithCurrentSubtrees: specSelectors.specJS()
     }))
 
     delete requestBatch.system
diff --git a/src/core/plugins/spec/selectors.js b/src/core/plugins/spec/selectors.js
index 2647fef6..19c6b1dd 100644
--- a/src/core/plugins/spec/selectors.js
+++ b/src/core/plugins/spec/selectors.js
@@ -38,6 +38,11 @@ export const specJson = createSelector(
   spec => spec.get("json", Map())
 )
 
+export const specJS = createSelector(
+  specJson,
+  (spec) => spec.toJS()
+)
+
 export const specResolved = createSelector(
   state,
   spec => spec.get("resolved", Map())