diff --git a/backend/src/apis/KlicktippController.ts b/backend/src/apis/KlicktippController.ts
index d94b4e132..91c92c855 100644
--- a/backend/src/apis/KlicktippController.ts
+++ b/backend/src/apis/KlicktippController.ts
@@ -143,9 +143,15 @@ export const addFieldsToSubscriber = async (
   newemail = '',
   newsmsnumber = '',
 ) => {
-  const isLogin = await loginKlicktippUser()
-  if (isLogin) {
-    const subscriberId = await klicktippConnector.subscriberSearch(email)
-    return await klicktippConnector.subscriberUpdate(subscriberId, fields, newemail, newsmsnumber)
-  }
+  return callKlickTippAPI(
+    async ({ email, fields, newemail, newsmsnumber }) => {
+      const isLogin = await loginKlicktippUser()
+      if (isLogin) {
+        const subscriberId = await klicktippConnector.subscriberSearch(email)
+        return klicktippConnector.subscriberUpdate(subscriberId, fields, newemail, newsmsnumber)
+      }
+      throw new LogError(`Could not add fields (${fields}) to subscriber ${email}`)
+    },
+    { email, fields, newemail, newsmsnumber },
+  )
 }