diff --git a/x-pack/plugins/reporting/server/routes/jobs.ts b/x-pack/plugins/reporting/server/routes/jobs.ts
index e8eac9e577beb..db62c0cc403fc 100644
--- a/x-pack/plugins/reporting/server/routes/jobs.ts
+++ b/x-pack/plugins/reporting/server/routes/jobs.ts
@@ -15,11 +15,6 @@ import {
   downloadJobResponseHandlerFactory,
 } from './lib/job_response_handler';
 
-interface ListQuery {
-  page: string;
-  size: string;
-  ids?: string; // optional field forbids us from extending RequestQuery
-}
 const MAIN_ENTRY = `${API_BASE_URL}/jobs`;
 
 const handleUnavailable = (res: any) => {
@@ -52,11 +47,7 @@ export function registerJobInfoRoutes(reporting: ReportingCore) {
       const {
         management: { jobTypes = [] },
       } = await reporting.getLicenseInfo();
-      const {
-        page: queryPage = '0',
-        size: querySize = '10',
-        ids: queryIds = null,
-      } = req.query as ListQuery; // NOTE: type inference is not working here. userHandler breaks it?
+      const { page: queryPage = '0', size: querySize = '10', ids: queryIds = null } = req.query;
       const page = parseInt(queryPage, 10) || 0;
       const size = Math.min(100, parseInt(querySize, 10) || 10);
       const jobIds = queryIds ? queryIds.split(',') : null;
@@ -116,7 +107,7 @@ export function registerJobInfoRoutes(reporting: ReportingCore) {
         return handleUnavailable(res);
       }
 
-      const { docId } = req.params as { docId: string };
+      const { docId } = req.params;
       const {
         management: { jobTypes = [] },
       } = await reporting.getLicenseInfo();
@@ -161,7 +152,7 @@ export function registerJobInfoRoutes(reporting: ReportingCore) {
         return res.custom({ statusCode: 503 });
       }
 
-      const { docId } = req.params as { docId: string };
+      const { docId } = req.params;
       const {
         management: { jobTypes = [] },
       } = await reporting.getLicenseInfo();
@@ -213,7 +204,7 @@ export function registerJobInfoRoutes(reporting: ReportingCore) {
         return handleUnavailable(res);
       }
 
-      const { docId } = req.params as { docId: string };
+      const { docId } = req.params;
       const {
         management: { jobTypes = [] },
       } = await reporting.getLicenseInfo();
@@ -239,7 +230,7 @@ export function registerJobInfoRoutes(reporting: ReportingCore) {
         return handleUnavailable(res);
       }
 
-      const { docId } = req.params as { docId: string };
+      const { docId } = req.params;
       const {
         management: { jobTypes = [] },
       } = await reporting.getLicenseInfo();
diff --git a/x-pack/plugins/reporting/server/routes/lib/authorized_user_pre_routing.ts b/x-pack/plugins/reporting/server/routes/lib/authorized_user_pre_routing.ts
index 3758eafc6d718..e2f393aad57d2 100644
--- a/x-pack/plugins/reporting/server/routes/lib/authorized_user_pre_routing.ts
+++ b/x-pack/plugins/reporting/server/routes/lib/authorized_user_pre_routing.ts
@@ -12,7 +12,7 @@ import { getUserFactory } from './get_user';
 type ReportingUser = AuthenticatedUser | null;
 const superuserRole = 'superuser';
 
-export type RequestHandlerUser = RequestHandler extends (...a: infer U) => infer R
+export type RequestHandlerUser<P, Q, B> = RequestHandler<P, Q, B> extends (...a: infer U) => infer R
   ? (user: ReportingUser, ...a: U) => R
   : never;
 
@@ -21,7 +21,7 @@ export const authorizedUserPreRoutingFactory = function authorizedUserPreRouting
 ) {
   const setupDeps = reporting.getPluginSetupDeps();
   const getUser = getUserFactory(setupDeps.security);
-  return <P, Q, B>(handler: RequestHandlerUser): RequestHandler<P, Q, B, RouteMethod> => {
+  return <P, Q, B>(handler: RequestHandlerUser<P, Q, B>): RequestHandler<P, Q, B, RouteMethod> => {
     return (context, req, res) => {
       let user: ReportingUser = null;
       if (setupDeps.security && setupDeps.security.license.isEnabled()) {