diff --git a/public/typo3conf/ext/ep_theme/Configuration/Yaml/BaseSetup.yaml b/public/typo3conf/ext/ep_theme/Configuration/Yaml/BaseSetup.yaml
index b48f87b9..22f5cf2c 100644
--- a/public/typo3conf/ext/ep_theme/Configuration/Yaml/BaseSetup.yaml
+++ b/public/typo3conf/ext/ep_theme/Configuration/Yaml/BaseSetup.yaml
@@ -21,6 +21,8 @@ TYPO3:
           finishersDefinition:
             BpnApiFinisher:
               implementationClassName: 'EP\EpTheme\Form\BpnApiFinisher'
+            AddReferrerFinisher:
+              implementationClassName: 'EP\EpTheme\Form\AddReferrerFinisher'
 
         contactform:
           __inheritances: