diff --git a/scriptedbrowser/control.php b/scriptedbrowser/control.php
index 98e68b8..8b68d91 100644
--- a/scriptedbrowser/control.php
+++ b/scriptedbrowser/control.php
@@ -233,7 +233,7 @@ class Control
         }
 
         if ($openSession) {
-            $sessionData = $this->execute('POST', "session", '{"capabilities" :  {"alwaysMatch": {"moz:firefoxOptions":{"prefs":{"browser.display.os-zoom-behavior": 0,"layout.css.prefers-color-scheme.content-override": 1}}}, "firstMatch": [{"browserName": "firefox"}]}}');
+            $sessionData = $this->execute('POST', "session", '{"capabilities" :  {"alwaysMatch": {"acceptInsecureCerts": true, "moz:firefoxOptions":{"prefs":{"browser.display.os-zoom-behavior": 0,"layout.css.prefers-color-scheme.content-override": 1}}}, "firstMatch": [{"browserName": "firefox"}]}}');
             $this->session = $sessionData['sessionId'];
         }
         return $this->session;