diff --git a/src/models/Fetcher.ts b/src/models/Fetcher.ts
index d1722da..283e9db 100644
--- a/src/models/Fetcher.ts
+++ b/src/models/Fetcher.ts
@@ -1,7 +1,7 @@
 import type Comcigan from '../client'
 
 export default class Fetcher {
-  protected client!: Comcigan
+  protected readonly client!: Comcigan
 
   constructor(client: Comcigan) {
     Object.defineProperty(this, 'client', { value: client, enumerable: false })