diff --git a/nextcloud-user-quotas/README.md b/nextcloud-user-quotas/README.md
--- a/nextcloud-user-quotas/README.md
+++ b/nextcloud-user-quotas/README.md
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@@ -52,4 +52,4 @@ To graph out per user, but exclude specific users, you can use the following Flu
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|> filter(fn: (r) => r._measurement == "nextcloud_quotas" and r._field == "percent_used")
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|> filter(fn: (r) => r.user != "admin" and r.user != "telegraf_api_poller")
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|> aggregateWindow(every: 5m, fn: mean)
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+ |> keep(columns: ["_time", "user", "_value"])