diff --git a/Configuration/Services/Tracking.yaml b/Configuration/Services/Tracking.yaml
index 1724737..cb5a09e 100644
--- a/Configuration/Services/Tracking.yaml
+++ b/Configuration/Services/Tracking.yaml
@@ -134,7 +134,7 @@ services:
       $rule: >
           not (context.getAspect("backend.user").isLoggedIn())
           and not (context.getAspect("frontend.preview").isPreview())
-          and request.getHeader("User-Agent")[0]
+          and traverse(request.getHeader("User-Agent"), '0')
           and not (request.getHeader("User-Agent")[0] matches "/^TYPO3|TYPO3 linkvalidator/")
           and not (request.getHeader("User-Agent")[0] matches "/^Codeception Testing/")
           and not (request.getHeader("User-Agent")[0] matches "/Wget|curl|Go-http-client/")
@@ -147,14 +147,14 @@ services:
       $rules:
         topics:
           matches: >
-              request.getQueryParams()["topic_uid"] > 0
+              traverse(request.getQueryParams(), "topic_uid") > 0
               and not (context.getAspect("backend.user").isLoggedIn())
               and not (context.getAspect("frontend.preview").isPreview())
-              and request.getHeader("User-Agent")[0]
+              and traverse(request.getHeader("User-Agent"), '0')
               and not (request.getHeader("User-Agent")[0] matches "/^TYPO3|TYPO3 linkvalidator/")
               and not (request.getHeader("User-Agent")[0] matches "/^Codeception Testing/")
               and not (request.getHeader("User-Agent")[0] matches "/Wget|curl|Go-http-client/")
               and not (request.getHeader("User-Agent")[0] matches "/bot|spider|Slurp|Sogou|NextCloud-News|Feedly|XING FeedReader|SEOkicks|Seekport Crawler|ia_archiver|TrendsmapResolver|Nuzzel/")
               and not (request.getHeader("User-Agent")[0] matches "/mattermost|Slackbot|WhatsApp/")
-          recordUid: 'request.getQueryParams()["topic_uid"]'
+          recordUid: 'traverse(request.getQueryParams(), "topic_uid")'
           tableName: 'sys_category'