diff --git a/src/app/shared/state/books.reducer.ts b/src/app/shared/state/books.reducer.ts
index 426fbbb..fda8bdc 100644
--- a/src/app/shared/state/books.reducer.ts
+++ b/src/app/shared/state/books.reducer.ts
@@ -35,3 +35,7 @@ export const booksReducer = createReducer(
     };
   })
 );
+
+export function reducer(state: State | undefined, action: Action) {
+  return booksReducer(state, action);
+}
diff --git a/src/app/shared/state/index.ts b/src/app/shared/state/index.ts
index 78e2fee..3b68c8d 100644
--- a/src/app/shared/state/index.ts
+++ b/src/app/shared/state/index.ts
@@ -2,8 +2,12 @@ import { ActionReducerMap, createSelector, MetaReducer } from "@ngrx/store";
 import * as fromAuth from "./auth.reducer";
 import * as fromBooks from "./books.reducer";
 
-export interface State {}
+export interface State {
+  books: fromBooks.State;
+}
 
-export const reducers: ActionReducerMap<State> = {};
+export const reducers: ActionReducerMap<State> = {
+  books: fromBooks.reducer
+};
 
 export const metaReducers: MetaReducer<State>[] = [];