diff --git a/HttpServer/Http/Response.php b/HttpServer/Http/Response.php
index 3c3a5124..c9dcbb43 100644
--- a/HttpServer/Http/Response.php
+++ b/HttpServer/Http/Response.php
@@ -211,7 +211,6 @@ class Response extends HttpService implements ResponseInterface
 	public function configure(SResponse $response): static
 	{
 		$response->setStatusCode($this->statusCode);
-		$response->header('Content-Type', $this->getResponseFormat());
 		$response->header('Run-Time', $this->getRuntime());
 		if (!empty($this->headers)) {
 			foreach ($this->headers as $name => $header) {
diff --git a/Server/Constrict/ResponseEmitter.php b/Server/Constrict/ResponseEmitter.php
index 931e340b..c91344bf 100644
--- a/Server/Constrict/ResponseEmitter.php
+++ b/Server/Constrict/ResponseEmitter.php
@@ -29,6 +29,7 @@ class ResponseEmitter
 		if ($content instanceof FileFormatter) {
 			$this->download($content->getData(), $response);
 		} else {
+			$response->header('Content-Type', $emitter->getResponseFormat());
 			$response->end($content->getData());
 		}
 	}