diff --git a/html/includes/forms/callback-clear.inc.php b/html/includes/forms/callback-clear.inc.php
index 38d990639..f0fb77576 100644
--- a/html/includes/forms/callback-clear.inc.php
+++ b/html/includes/forms/callback-clear.inc.php
@@ -11,6 +11,7 @@
  * option) any later version.  Please see LICENSE.txt at the top level of
  * the source code distribution for details.
  */
+header('Content-type: text/plain');
 
 if(is_admin() === false) {
     die('ERROR: You need to be admin');
diff --git a/html/includes/forms/callback-statistics.inc.php b/html/includes/forms/callback-statistics.inc.php
index 36a2c4d9d..1b25df57b 100644
--- a/html/includes/forms/callback-statistics.inc.php
+++ b/html/includes/forms/callback-statistics.inc.php
@@ -11,6 +11,7 @@
  * option) any later version.  Please see LICENSE.txt at the top level of
  * the source code distribution for details.
  */
+header('Content-type: text/plain');
 
 if(is_admin() === false) {
     die('ERROR: You need to be admin');
diff --git a/html/includes/forms/notifications.inc.php b/html/includes/forms/notifications.inc.php
index 187f2ee2c..71c615085 100644
--- a/html/includes/forms/notifications.inc.php
+++ b/html/includes/forms/notifications.inc.php
@@ -21,6 +21,7 @@
  * @package LibreNMS
  * @subpackage Notifications
  */
+header('Content-type: application/json');
 
 $status    = 'error';
 $message   = 'unknown error';
diff --git a/html/includes/forms/parse-template-rules.inc.php b/html/includes/forms/parse-template-rules.inc.php
index b5800b50f..199daa559 100644
--- a/html/includes/forms/parse-template-rules.inc.php
+++ b/html/includes/forms/parse-template-rules.inc.php
@@ -11,6 +11,7 @@
  * option) any later version.  Please see LICENSE.txt at the top level of
  * the source code distribution for details.
  */
+header('Content-type: application/json');
 
 if (is_admin() === false) {
     die('ERROR: You need to be admin');
diff --git a/html/includes/forms/query-ripenccapi.inc.php b/html/includes/forms/query-ripenccapi.inc.php
index 0e21b12fe..e9af57177 100644
--- a/html/includes/forms/query-ripenccapi.inc.php
+++ b/html/includes/forms/query-ripenccapi.inc.php
@@ -9,6 +9,7 @@
  * option) any later version.  Please see LICENSE.txt at the top level of
  * the source code distribution for details.
  */
+header('Content-type: application/json');
 
 $status    = 'error';
 $message   = 'unknown error';
diff --git a/html/includes/forms/schedule-maintenance.inc.php b/html/includes/forms/schedule-maintenance.inc.php
index d601116ee..661c9ba49 100644
--- a/html/includes/forms/schedule-maintenance.inc.php
+++ b/html/includes/forms/schedule-maintenance.inc.php
@@ -11,6 +11,7 @@
  * option) any later version.  Please see LICENSE.txt at the top level of
  * the source code distribution for details.
  */
+header('Content-type: application/json');
 
 if (is_admin() === false) {
     die('ERROR: You need to be admin');
diff --git a/html/includes/forms/test-transport.inc.php b/html/includes/forms/test-transport.inc.php
index 05b4dcfdd..2486c71ca 100644
--- a/html/includes/forms/test-transport.inc.php
+++ b/html/includes/forms/test-transport.inc.php
@@ -11,6 +11,7 @@
  * option) any later version.  Please see LICENSE.txt at the top level of
  * the source code distribution for details.
  */
+header('Content-type: application/json');
 
 if (is_admin() === false) {
     die('ERROR: You need to be admin');
diff --git a/html/includes/forms/token-item-create.inc.php b/html/includes/forms/token-item-create.inc.php
index 61810287a..7e573b2ac 100644
--- a/html/includes/forms/token-item-create.inc.php
+++ b/html/includes/forms/token-item-create.inc.php
@@ -11,6 +11,7 @@
  * option) any later version.  Please see LICENSE.txt at the top level of
  * the source code distribution for details.
  */
+header('Content-type: text/plain');
 
 if(is_admin() === false) {
     die('ERROR: You need to be admin');
diff --git a/html/includes/forms/token-item-disable.inc.php b/html/includes/forms/token-item-disable.inc.php
index 1f962c020..f05796127 100644
--- a/html/includes/forms/token-item-disable.inc.php
+++ b/html/includes/forms/token-item-disable.inc.php
@@ -11,6 +11,7 @@
  * option) any later version.  Please see LICENSE.txt at the top level of
  * the source code distribution for details.
  */
+header('Content-type: text/plain');
 
 if(is_admin() === false) {
     die('ERROR: You need to be admin');
diff --git a/html/includes/forms/token-item-remove.inc.php b/html/includes/forms/token-item-remove.inc.php
index 4d494672c..4c241bedc 100644
--- a/html/includes/forms/token-item-remove.inc.php
+++ b/html/includes/forms/token-item-remove.inc.php
@@ -11,6 +11,7 @@
  * option) any later version.  Please see LICENSE.txt at the top level of
  * the source code distribution for details.
  */
+header('Content-type: text/plain');
 
 if(is_admin() === false) {
     die('ERROR: You need to be admin');
diff --git a/html/includes/forms/update-notes.inc.php b/html/includes/forms/update-notes.inc.php
index 3750e59d9..521a485bf 100644
--- a/html/includes/forms/update-notes.inc.php
+++ b/html/includes/forms/update-notes.inc.php
@@ -9,6 +9,7 @@
  * option) any later version.  Please see LICENSE.txt at the top level of
  * the source code distribution for details.
  */
+header('Content-type: application/json');
 
 $status    = 'error';
 $message   = 'unknown error';
diff --git a/html/includes/forms/widget-settings.inc.php b/html/includes/forms/widget-settings.inc.php
index fabe6c4aa..10ed3ad57 100644
--- a/html/includes/forms/widget-settings.inc.php
+++ b/html/includes/forms/widget-settings.inc.php
@@ -21,6 +21,7 @@
  * @package LibreNMS
  * @subpackage Widgets
  */
+header('Content-type: application/json');
 
 $status    = 'error';
 $message   = 'unknown error';