diff --git a/build/router/controller/api.php b/build/router/controller/api.php
index 288c625..a6b0987 100644
--- a/build/router/controller/api.php
+++ b/build/router/controller/api.php
@@ -33,12 +33,13 @@
 		*/
 		public function call(){
 
+			header('Content-Type: application/json');
+
 			/* (1) Process response */
 			$this->response = $this->request->dispatch();
 
 			/* (2) Manages result */
 			if( $this->response instanceof Response ){
-				header('Content-Type: application/json');
 				echo $this->response->serialize();
 			}