diff --git a/src/yoyo/Services/Response.php b/src/yoyo/Services/Response.php
index 8ff75d1..a6ac830 100644
--- a/src/yoyo/Services/Response.php
+++ b/src/yoyo/Services/Response.php
@@ -41,12 +41,10 @@ public function send(string $content = ''): string
             header("$key: $value");
         }
 
-        if ($this->statusCode == 204) {
-            http_response_code(204);
+        if (! headers_sent()) {
+            http_response_code($this->statusCode ?? 200);
         }
 
-        http_response_code($this->statusCode ?? 200);
-
         return $content ?: '';
     }