diff --git a/src/opnsense/mvc/app/controllers/OPNsense/Base/ApiControllerBase.php b/src/opnsense/mvc/app/controllers/OPNsense/Base/ApiControllerBase.php
index 348fa5b99..3cb65cecc 100644
--- a/src/opnsense/mvc/app/controllers/OPNsense/Base/ApiControllerBase.php
+++ b/src/opnsense/mvc/app/controllers/OPNsense/Base/ApiControllerBase.php
@@ -127,7 +127,7 @@ class ApiControllerBase extends ControllerRoot
                 if (empty($this->request->getRawBody()) && empty($jsonRawBody)) {
                     return "Invalid JSON syntax";
                 }
-                $_POST = $jsonRawBody;
+                $_POST = is_array($jsonRawBody) ? $jsonRawBody : [];
                 foreach ($_POST as $key => $value) {
                     $_REQUEST[$key] = $value;
                 }