diff --git a/tests/defineCORSEventHandler.spec.ts b/tests/defineCORSEventHandler.spec.ts
index c94fb00..bbfd09f 100644
--- a/tests/defineCORSEventHandler.spec.ts
+++ b/tests/defineCORSEventHandler.spec.ts
@@ -6,7 +6,9 @@
 
 /*****************************************************************************************************************/
 
-import { describe, expect, it, suite } from 'vitest'
+import { describe, expect, expectTypeOf, it, suite } from 'vitest'
+
+import { type EventHandler, type EventHandlerRequest } from 'h3'
 
 import { defineCORSEventHandler } from '../src'
 
@@ -17,5 +19,41 @@ suite('nitro-cors eventHandler', () => {
     it('should be defined', () => {
       expect(defineCORSEventHandler).toBeDefined()
     })
+
+    it('should return the correct event handler types when specified', async () => {
+      const handler = defineCORSEventHandler(
+        async event => {
+          return {
+            cors: true
+          }
+        },
+        {
+          origin: '*',
+          methods: '*'
+        }
+      )
+
+      expectTypeOf(handler).toEqualTypeOf<
+        EventHandler<EventHandlerRequest, Promise<{ cors: boolean }>>
+      >()
+    })
+
+    it('should return the correct event handler types when specified', () => {
+      const handler = defineCORSEventHandler(
+        event => {
+          return {
+            cors: true
+          }
+        },
+        {
+          origin: '*',
+          methods: '*'
+        }
+      )
+
+      expectTypeOf(handler).toEqualTypeOf<EventHandler<EventHandlerRequest, { cors: boolean }>>()
+    })
   })
 })
+
+/*****************************************************************************************************************/