diff --git a/packages/rest/src/manager.ts b/packages/rest/src/manager.ts
index 5494b7edb..ae9437ca5 100644
--- a/packages/rest/src/manager.ts
+++ b/packages/rest/src/manager.ts
@@ -555,12 +555,12 @@ export function createRestManager(options: CreateRestManagerOptions): RestManage
         const result = await fetch(`${rest.baseUrl}/v${rest.version}${route}`, rest.createRequestBody(method, options))
 
         if (!result.ok) {
-          const errText = await result.text().catch(() => null)
+          const body = (result.headers.get('Content-Type') === 'application/json' ? await result.json() : await result.text()).catch(() => null)
 
           error.cause = {
             ok: false,
             status: result.status,
-            body: errText,
+            body,
           }
 
           throw error