diff --git a/src/core.ts b/src/core.ts
index 9cd99639d..75cb120c6 100644
--- a/src/core.ts
+++ b/src/core.ts
@@ -49,6 +49,11 @@ async function defaultParseResponse<T>(props: APIResponseProps): Promise<T> {
     return Stream.fromSSEResponse(response, props.controller) as any;
   }
 
+  // fetch refuses to read the body when the status code is 204.
+  if (response.status === 204) {
+    return null as T;
+  }
+
   const contentType = response.headers.get('content-type');
   if (contentType?.includes('application/json')) {
     const json = await response.json();