diff --git a/test/types/index.ts b/test/types/index.ts
index c5d7b2031..bdbf2a800 100644
--- a/test/types/index.ts
+++ b/test/types/index.ts
@@ -15,6 +15,13 @@ import {
 
 const { expect: check } = lab;
 
+type IsAny<T> = (
+    unknown extends T
+      ? [keyof T] extends [never] ? false : true
+      : false
+  );
+
+
 declare module '../..' {
     interface UserCredentials {
         someId: string;
@@ -41,6 +48,8 @@ const genericRoute: ServerRoute = {
 
         check.type<UserCredentials>(request.auth.credentials!.user!);
 
+        const y: IsAny<typeof request.auth.credentials> = false;
+
         return 'hello!';
     }
 }
@@ -109,6 +118,9 @@ const route: ServerRoute<RequestDecorations> = {
         check.type<string>(request.auth.artifacts.some);
         check.type<number>(request.auth.artifacts.thing);
 
+        const y: IsAny<typeof request.auth.credentials> = false;
+        const z: IsAny<typeof request.auth.artifacts> = false;
+
         return 'hello!'
     }
 };
@@ -171,4 +183,4 @@ server.method('test.add', (a: number, b: number) => a + b, {
         segment: 'test-segment',
     },
     generateKey: (a: number, b: number) => `${a}${b}`
-});
\ No newline at end of file
+});