diff --git a/types/redux-first-router/index.d.ts b/types/redux-first-router/index.d.ts
index fee6b525e0..278891e10b 100644
--- a/types/redux-first-router/index.d.ts
+++ b/types/redux-first-router/index.d.ts
@@ -7,6 +7,7 @@
 //                 jscinoz <https://github.com/jscinoz>
 //                 surgeboris <https://github.com/surgeboris>
 //                 geirsagberg <https://github.com/geirsagberg>
+//                 Harry Hedger <https://github.com/hedgerh>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 // TypeScript Version: 2.4
 
@@ -54,7 +55,7 @@ export interface ReceivedAction {
     type: string;
     payload: Payload;
     meta?: object;
-    query?: object;
+    query?: Query;
     search?: string;
     navKey?: Nullable<string>;
 }
@@ -62,11 +63,11 @@ export interface ReceivedAction {
 export interface ReceivedActionMeta {
     type: string;
     payload: Payload;
-    query?: object;
+    query?: Query;
     navKey?: Nullable<string>;
     meta: {
         notFoundPath?: string;
-        query?: object;
+        query?: Query;
         search?: string;
     };
 }
@@ -83,7 +84,7 @@ export interface Location {
     pathname: string;
     type: string;
     payload: Payload;
-    query?: object;
+    query?: Query;
     search?: string;
 }
 
@@ -91,7 +92,7 @@ export interface LocationState<TKeys = {}, TState = any> {
     pathname: string;
     type: string;
     payload: Payload;
-    query?: object;
+    query?: Query;
     search?: string;
     prev: Location;
     kind: Nullable<string>;
@@ -122,7 +123,7 @@ export interface Meta {
     location: ActionMetaLocation;
     notFoundPath?: string;
     navigation?: NavigationAction;
-    query?: object;
+    query?: Query;
     search?: string;
 }
 
@@ -130,7 +131,7 @@ export interface Action {
     type: string;
     payload?: Payload;
     meta?: Meta;
-    query?: object;
+    query?: Query;
     navKey?: Nullable<string>;
 }
 
@@ -296,8 +297,18 @@ export interface Options<TKeys = {}, TState = any> {
     extra?: any;
 }
 
-export type Params = object;
-export type Payload = object;
+export interface Query {
+    [key: string]: string;
+}
+
+export interface Params {
+    [key: string]: any;
+}
+
+export interface Payload {
+    query?: Query;
+    [key: string]: any;
+}
 
 export type DisplayConfirmLeave = (message: string, callback: (unblock: boolean) => void) => void;
 
diff --git a/types/redux-first-router/redux-first-router-tests.ts b/types/redux-first-router/redux-first-router-tests.ts
index 0439f551c7..c3b99fbbdf 100644
--- a/types/redux-first-router/redux-first-router-tests.ts
+++ b/types/redux-first-router/redux-first-router-tests.ts
@@ -70,7 +70,7 @@ const { reducer, middleware, enhancer, initialDispatch, thunk } = connectRoutes(
     initialEntries: [],
     querySerializer: {
         stringify: queryString => {
-            queryString; // $ExpectType object
+            queryString; // $ExpectType Params
             return '';
         },
         parse: params => {