diff --git a/waspc/examples/todoApp/src/env.ts b/waspc/examples/todoApp/src/env.ts
index bd74293604..1a7c4cb6e3 100644
--- a/waspc/examples/todoApp/src/env.ts
+++ b/waspc/examples/todoApp/src/env.ts
@@ -1,14 +1,14 @@
 import * as z from 'zod'
 import type { EnvValidationFn } from 'wasp/env'
 
-export const serverEnvValidationFn: EnvValidationFn = () =>
+export const serverEnvValidationFn = (() =>
   z.object({
     MY_ENV_VAR: z.string({
       required_error: 'MY_ENV_VAR is required.',
     }),
-  })
+  })) satisfies EnvValidationFn
 
-export const clientEnvValidationFn: EnvValidationFn = () =>
+export const clientEnvValidationFn = (() =>
   z.object({
     REACT_APP_NAME: z.string().default('TODO App'),
-  })
+  })) satisfies EnvValidationFn