diff --git a/packages/delegate/src/delegationBindings.ts b/packages/delegate/src/delegationBindings.ts
index 801efc5a582..5ac0846d3cb 100644
--- a/packages/delegate/src/delegationBindings.ts
+++ b/packages/delegate/src/delegationBindings.ts
@@ -40,9 +40,9 @@ export function defaultDelegationBinding(delegationContext: DelegationContext):
     delegationTransforms = delegationTransforms.concat([
       new AddSelectionSets(
         info.schema,
+        returnType,
         stitchingInfo.selectionSetsByType,
-        stitchingInfo.selectionSetsByField,
-        returnType
+        stitchingInfo.selectionSetsByField
       ),
       new WrapConcreteTypes(returnType, transformedSchema),
       new ExpandAbstractTypes(info.schema, transformedSchema),
diff --git a/packages/delegate/src/transforms/AddSelectionSets.ts b/packages/delegate/src/transforms/AddSelectionSets.ts
index 6e5cf0e22c5..c86d353b17e 100644
--- a/packages/delegate/src/transforms/AddSelectionSets.ts
+++ b/packages/delegate/src/transforms/AddSelectionSets.ts
@@ -8,9 +8,9 @@ export default class AddSelectionSetsByField implements Transform {
 
   constructor(
     sourceSchema: GraphQLSchema,
+    initialType: GraphQLOutputType,
     selectionSetsByType: Record<string, SelectionSetNode>,
-    selectionSetsByField: Record<string, Record<string, SelectionSetNode>>,
-    initialType: GraphQLOutputType
+    selectionSetsByField: Record<string, Record<string, SelectionSetNode>>
   ) {
     this.transformer = new VisitSelectionSets(sourceSchema, initialType, (node, typeInfo) =>
       visitSelectionSet(node, typeInfo, selectionSetsByType, selectionSetsByField)
diff --git a/packages/utils/src/errors.ts b/packages/utils/src/errors.ts
index 062993c8b53..54b7d550dbc 100644
--- a/packages/utils/src/errors.ts
+++ b/packages/utils/src/errors.ts
@@ -1,6 +1,7 @@
 import { GraphQLError } from 'graphql';
 
 export const ERROR_SYMBOL = Symbol('subschemaErrors');
+export const DEPTH_SYMBOL = Symbol('subschemaDepth');
 
 export function relocatedError(originalError: GraphQLError, path?: ReadonlyArray<string | number>): GraphQLError {
   return new GraphQLError(