diff --git a/.changeset/sweet-ligers-push.md b/.changeset/sweet-ligers-push.md
new file mode 100644
index 000000000..6b50678e2
--- /dev/null
+++ b/.changeset/sweet-ligers-push.md
@@ -0,0 +1,5 @@
+---
+'astro': patch
+---
+
+Remove explicit `Transfer-Encoding: chunked` header from streaming responses
diff --git a/packages/astro/src/core/render/core.ts b/packages/astro/src/core/render/core.ts
index e5b604cba..c9efe02de 100644
--- a/packages/astro/src/core/render/core.ts
+++ b/packages/astro/src/core/render/core.ts
@@ -149,7 +149,6 @@ export async function render(opts: RenderOptions): Promise<Response> {
 		site,
 		scripts,
 		ssr,
-		streaming,
 		status,
 	});
 
diff --git a/packages/astro/src/core/render/result.ts b/packages/astro/src/core/render/result.ts
index dc5be4a07..9eb618cb3 100644
--- a/packages/astro/src/core/render/result.ts
+++ b/packages/astro/src/core/render/result.ts
@@ -27,7 +27,6 @@ function onlyAvailableInSSR(name: string) {
 export interface CreateResultArgs {
 	adapterName: string | undefined;
 	ssr: boolean;
-	streaming: boolean;
 	logging: LogOptions;
 	origin: string;
 	markdown: MarkdownRenderingOptions;
@@ -126,12 +125,7 @@ export function createResult(args: CreateResultArgs): SSRResult {
 
 	const url = new URL(request.url);
 	const headers = new Headers();
-	if (args.streaming) {
-		headers.set('Transfer-Encoding', 'chunked');
-		headers.set('Content-Type', 'text/html');
-	} else {
-		headers.set('Content-Type', 'text/html');
-	}
+	headers.set('Content-Type', 'text/html');
 	const response: ResponseInit = {
 		status: args.status,
 		statusText: 'OK',