diff --git a/mailpoet/lib/Automation/Integrations/MailPoet/Analytics/Controller/AutomationEmailController.php b/mailpoet/lib/Automation/Integrations/MailPoet/Analytics/Controller/AutomationEmailController.php
index b97e711315..70f78c11ee 100644
--- a/mailpoet/lib/Automation/Integrations/MailPoet/Analytics/Controller/AutomationEmailController.php
+++ b/mailpoet/lib/Automation/Integrations/MailPoet/Analytics/Controller/AutomationEmailController.php
@@ -80,7 +80,8 @@ class AutomationEmailController {
       array_filter(
         array_map(
           function($step) {
-            return $step->getArgs()['email_id'];
+            $args = $step->getArgs();
+            return isset($args['email_id']) ? absint($args['email_id']) : null;
           },
           $emailSteps
         )