diff --git a/scm-ui/src/permissions/modules/permissions.js b/scm-ui/src/permissions/modules/permissions.js
index 3bf46394d5..2dec35b075 100644
--- a/scm-ui/src/permissions/modules/permissions.js
+++ b/scm-ui/src/permissions/modules/permissions.js
@@ -5,10 +5,15 @@ import type { Action } from "../../types/Action";
 import type { Permission, Permissions } from "../types/Permissions";
 
 export const FETCH_PERMISSIONS = "scm/repos/FETCH_PERMISSIONS";
-export const FETCH_PERMISSIONS_PENDING = `${FETCH_PERMISSIONS}_${types.PENDING_SUFFIX}`;
-export const FETCH_PERMISSIONS_SUCCESS = `${FETCH_PERMISSIONS}_${types.SUCCESS_SUFFIX}`;
-export const FETCH_PERMISSIONS_FAILURE = `${FETCH_PERMISSIONS}_${types.FAILURE_SUFFIX}`;
-
+export const FETCH_PERMISSIONS_PENDING = `${FETCH_PERMISSIONS}_${
+  types.PENDING_SUFFIX
+}`;
+export const FETCH_PERMISSIONS_SUCCESS = `${FETCH_PERMISSIONS}_${
+  types.SUCCESS_SUFFIX
+}`;
+export const FETCH_PERMISSIONS_FAILURE = `${FETCH_PERMISSIONS}_${
+  types.FAILURE_SUFFIX
+}`;
 
 const REPOS_URL = "repositories";
 const PERMISSIONS_URL = "permissions";
@@ -30,7 +35,10 @@ export function fetchPermissions(namespace: string, name: string) {
   };
 }
 
-export function fetchPermissionsPending(namespace: string, name: string): Action {
+export function fetchPermissionsPending(
+  namespace: string,
+  name: string
+): Action {
   return {
     type: FETCH_PERMISSIONS_PENDING,
     payload: {
@@ -41,7 +49,11 @@ export function fetchPermissionsPending(namespace: string, name: string): Action
   };
 }
 
-export function fetchPermissionsSuccess(permissions: Permissions, namespace: string, name: string): Action {
+export function fetchPermissionsSuccess(
+  permissions: Permissions,
+  namespace: string,
+  name: string
+): Action {
   return {
     type: FETCH_PERMISSIONS_SUCCESS,
     payload: permissions,
@@ -64,3 +76,20 @@ export function fetchPermissionsFailure(
     itemId: namespace + "/" + name
   };
 }
+
+// reducer
+export default function reducer(
+  state: Object = {},
+  action: Action = { type: "UNKNOWN" }
+): Object {
+  if (!action.payload) {
+    return state;
+  }
+
+  switch (action.type) {
+    case FETCH_PERMISSIONS_SUCCESS:
+      return state;
+    default:
+      return state;
+  }
+}
diff --git a/scm-ui/src/permissions/modules/permissions.test.js b/scm-ui/src/permissions/modules/permissions.test.js
index 94e894453b..1221837995 100644
--- a/scm-ui/src/permissions/modules/permissions.test.js
+++ b/scm-ui/src/permissions/modules/permissions.test.js
@@ -2,8 +2,9 @@
 import configureMockStore from "redux-mock-store";
 import thunk from "redux-thunk";
 import fetchMock from "fetch-mock";
-import {
+import reducer, {
   fetchPermissions,
+  fetchPermissionsSuccess,
   FETCH_PERMISSIONS_PENDING,
   FETCH_PERMISSIONS_SUCCESS,
   FETCH_PERMISSIONS_FAILURE
@@ -80,3 +81,26 @@ describe("permission fetch", () => {
     });
   });
 });
+
+describe("repos reducer", () => {
+  it("should return empty object, if state and action is undefined", () => {
+    expect(reducer()).toEqual({});
+  });
+
+  it("should return the same state, if the action is undefined", () => {
+    const state = { x: true };
+    expect(reducer(state)).toBe(state);
+  });
+
+  it("should return the same state, if the action is unknown to the reducer", () => {
+    const state = { x: true };
+    expect(reducer(state, { type: "EL_SPECIALE" })).toBe(state);
+  });
+
+  it("should store the permissions on FETCH_PERMISSION_SUCCESS", () => {
+    const newState = reducer(
+      {},
+      fetchPermissionsSuccess(s_bPermissions, "s", "b")
+    );
+  });
+});