diff --git a/lib/resolvers/parse/ast/enrich.js b/lib/resolvers/parse/ast/enrich.js
index 7f7cce6f..a14e3e29 100644
--- a/lib/resolvers/parse/ast/enrich.js
+++ b/lib/resolvers/parse/ast/enrich.js
@@ -34,10 +34,10 @@ const _traverseArgumentOrObjectField = (info, argumentOrObjectField, _fieldOr_ar
       argumentOrObjectField.value = substituteVariable(info, value)
       break
     case Kind.LIST:
-      _traverseListValue(info, value, type._fields)
+      _traverseListValue(info, value, type.getFields())
       break
     case Kind.OBJECT:
-      _traverseObjectValue(info, value, type._fields)
+      _traverseObjectValue(info, value, type.getFields())
       break
   }
 }
@@ -60,7 +60,7 @@ const _getTypeFrom_fieldOr_arg = _field => {
 const _traverseField = (info, field, _field) => {
   if (field.selectionSet) {
     const type = _getTypeFrom_fieldOr_arg(_field)
-    _traverseSelectionSet(info, field.selectionSet, type._fields)
+    _traverseSelectionSet(info, field.selectionSet, type.getFields())
   }
 
   field.arguments.forEach(arg => {
@@ -79,8 +79,8 @@ module.exports = info => {
   const deepClonedFieldNodes = JSON.parse(JSON.stringify(info.fieldNodes))
 
   const rootTypeName = info.parentType.name
-  const rootType = info.schema._typeMap[rootTypeName]
-  _traverseFieldNodes(info, deepClonedFieldNodes, rootType._fields)
+  const rootType = info.schema.getType(rootTypeName)
+  _traverseFieldNodes(info, deepClonedFieldNodes, rootType.getFields())
 
   return deepClonedFieldNodes
 }
diff --git a/test/util/index.js b/test/util/index.js
index a261acbb..d24079d9 100644
--- a/test/util/index.js
+++ b/test/util/index.js
@@ -32,7 +32,7 @@ const fakeInfoObject = (document, schema, parentTypeName, variables) => {
   return {
     fieldNodes: operationDefinition.selectionSet.selections,
     schema,
-    parentType: schema._typeMap[parentTypeName],
+    parentType: schema.getType(parentTypeName),
     variableValues: { ...variables },
     fragments
   }