diff --git a/Configuration/Services/Tracking.yaml b/Configuration/Services/Tracking.yaml
index d126bd1..1724737 100644
--- a/Configuration/Services/Tracking.yaml
+++ b/Configuration/Services/Tracking.yaml
@@ -134,6 +134,7 @@ services:
       $rule: >
           not (context.getAspect("backend.user").isLoggedIn())
           and not (context.getAspect("frontend.preview").isPreview())
+          and 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/")
@@ -149,6 +150,7 @@ services:
               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 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/")