diff --git a/packages/website-ue/src/core/api/abstract.ts b/packages/website-ue/src/core/api/abstract.ts
index 5a6121871..0e49e7a1a 100644
--- a/packages/website-ue/src/core/api/abstract.ts
+++ b/packages/website-ue/src/core/api/abstract.ts
@@ -165,8 +165,8 @@ export abstract class AbstractAPI {
   }
 }
 
-export function Cache(
-  discriminator: (...args: unknown[]) => string = () => "",
+export function Cache<Arguments extends unknown[]>(
+  discriminator: (...args: Arguments) => string = () => "",
 ) {
   const cache = new WeakMap<object, Map<string, unknown>>();
 
@@ -177,7 +177,7 @@ export function Cache(
   ) {
     const original = descriptor.value;
 
-    descriptor.value = async function (...args: unknown[]) {
+    descriptor.value = async function (...args: Arguments) {
       const key = discriminator(...args);
       const thisCache = cache.get(this) ?? new Map<string, unknown>();
 
diff --git a/packages/website-ue/src/core/api/server.ts b/packages/website-ue/src/core/api/server.ts
index d1b6588a7..c6c5dfa36 100644
--- a/packages/website-ue/src/core/api/server.ts
+++ b/packages/website-ue/src/core/api/server.ts
@@ -168,7 +168,7 @@ export class ServerAPI extends AbstractAPI {
     return data;
   }
 
-  @Cache((id) => id)
+  @Cache<[string]>((id) => id)
   async tank(id: string) {
     const tankList = await this.tankList();
     const tankListEntry = tankList.list.find((tank) => tank.id === id);