diff --git a/settings/ajax/disableapp.php b/settings/ajax/disableapp.php
index a39b06b9c7..e89de928ea 100644
--- a/settings/ajax/disableapp.php
+++ b/settings/ajax/disableapp.php
@@ -1,7 +1,6 @@
 <?php
 OC_JSON::checkAdminUser();
 OCP\JSON::callCheck();
-OC_JSON::setContentTypeHeader();
 
 OC_App::disable($_POST['appid']);
 
diff --git a/settings/ajax/enableapp.php b/settings/ajax/enableapp.php
index f4d5c53ade..18202dc39e 100644
--- a/settings/ajax/enableapp.php
+++ b/settings/ajax/enableapp.php
@@ -2,7 +2,6 @@
 
 OC_JSON::checkAdminUser();
 OCP\JSON::callCheck();
-OC_JSON::setContentTypeHeader();
 
 $appid = OC_App::enable($_POST['appid']);
 if($appid !== false) {