diff --git a/src/Cloud.ts b/src/Cloud.ts
index c8fd781ad..b9b785708 100644
--- a/src/Cloud.ts
+++ b/src/Cloud.ts
@@ -46,6 +46,7 @@ export function run<
   T extends (param: { [P in keyof Parameters<T>[0]]: Parameters<T>[0][P] }) => any,
 >(name: string, data: Parameters<T>[0], options?: RequestOptions): Promise<ReturnType<T>>;
 export function run(name: string, data?: any, options?: RequestOptions): Promise<any> {
+  options = options || {};
   if (typeof name !== 'string' || name.length === 0) {
     throw new TypeError('Cloud function name must be a string.');
   }
diff --git a/src/__tests__/Cloud-test.js b/src/__tests__/Cloud-test.js
index dba85b255..8ad96bcb4 100644
--- a/src/__tests__/Cloud-test.js
+++ b/src/__tests__/Cloud-test.js
@@ -357,8 +357,8 @@ describe('CloudController', () => {
     expect(options.useMasterKey).toBe(false);
   });
 
-  it('run passes with empty options', () => {
-    const values = [undefined, {}];
+  it('run passes with undefined, null or empty options', () => {
+    const values = [undefined, null, {}];
 
     const mockRun = jest.fn();
     mockRun.mockReturnValue(Promise.resolve({ result: {} }));
@@ -377,7 +377,7 @@ describe('CloudController', () => {
   });
 
   it('run throws with invalid options', () => {
-    const values = [null, []];
+    const values = [[]];
     for (const value of values) {
       expect(() => Cloud.run('myfunction', {}, value)).toThrow();
     }