diff --git a/COM-2305/Project/api/reservation/delete.php b/COM-2305/Project/api/reservation/delete.php
index 48562cb..b5f4056 100644
--- a/COM-2305/Project/api/reservation/delete.php
+++ b/COM-2305/Project/api/reservation/delete.php
@@ -1,6 +1,7 @@
 <?php
 header("Content-Type: application/json; charset=UTF-8");
 header("Access-Control-Allow-Origin: *");
+header("Access-Control-Allow-Headers: Content-Type");
 
 include("../connected.php");
 include("../../function/reservation/get_enum_values.php");
diff --git a/COM-2305/Project/api/reservation/get.php b/COM-2305/Project/api/reservation/get.php
index c72da8e..b77c9f5 100644
--- a/COM-2305/Project/api/reservation/get.php
+++ b/COM-2305/Project/api/reservation/get.php
@@ -1,6 +1,7 @@
 <?php
 header("Content-Type: application/json; charset=UTF-8");
 header("Access-Control-Allow-Origin: *");
+header("Access-Control-Allow-Headers: Content-Type");
 
 include("../connected.php");
 
diff --git a/COM-2305/Project/api/reservation/post.php b/COM-2305/Project/api/reservation/post.php
index 9dc82ef..afdec4e 100644
--- a/COM-2305/Project/api/reservation/post.php
+++ b/COM-2305/Project/api/reservation/post.php
@@ -1,6 +1,7 @@
 <?php
 header("Content-Type: application/json; charset=UTF-8");
 header("Access-Control-Allow-Origin: *");
+header("Access-Control-Allow-Headers: Content-Type");
 
 include("../connected.php");