# Kibana TSVB shows keyword string "/" as "(empty)"

**URL:** <https://discuss.elastic.co/t/kibana-tsvb-shows-keyword-string-as-empty/384577>\
**Category:** Kibana\
**Tags:** dashboard, visualisation\
**Created:** [January 16, 2026, 9:28am UTC](https://discuss.elastic.co/t/kibana-tsvb-shows-keyword-string-as-empty/384577 "2026-01-16T09:28:57Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![hylowaker](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/hylowaker/32/145169_2.png) [@hylowaker](https://discuss.elastic.co/u/hylowaker)\
**Post date:** [January 16, 2026, 9:28am UTC](https://discuss.elastic.co/t/kibana-tsvb-shows-keyword-string-as-empty/384577/1 "2026-01-16T09:28:57Z")

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I loaded Metricbeat dashboards into Kibana.

The **Disk Usage [Metricbeat System] ECS** library shows Top 10 mount points with high disk usages.

I see an `(empty)` mount point, but the actual value of `system.filesystem.mount_point` field is `/`. Why is it displayed as empty?

 ![screenshot-1768554919376](https://us1.discourse-cdn.com/elastic/original/3X/f/0/f029d15c4fcf13e92a3737c415cc12b9232d06d9.jpeg)

Kibana version: 9.1.2  
Metricbeat version: 9.2.4

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<div class="post-metadata">

**Author:** ![Tortoise](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/tortoise/32/147587_2.png) [@Tortoise](https://discuss.elastic.co/u/Tortoise)\
**Post date:** [January 17, 2026, 6:56am UTC](https://discuss.elastic.co/t/kibana-tsvb-shows-keyword-string-as-empty/384577/2 "2026-01-17T06:56:40Z")

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Hello @hylowaker

Yes i have checked & see the same behavior. If we hover on the empty mount point we see /

 ![image](https://us1.discourse-cdn.com/elastic/original/3X/8/c/8cfc9cb387ef8ec7cb5cd6db187073307e1e4825.png)

We can create a custom view as well on Lens :

 ![image](https://us1.discourse-cdn.com/elastic/original/3X/f/5/f52c2642a2a842783205ff3cdb91795557ca211f.png)

On increasing the / mount point i see both updated incase you plan to use a custom visualization:

 ![image](https://us1.discourse-cdn.com/elastic/original/3X/8/e/8e1351b8267ec0c6899da50f00458649b724e0a1.png)

Thanks!!

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<div class="post-metadata">

**Author:** ![Marco\_Liberati](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/marco_liberati/32/82953_2.png) [@Marco\_Liberati](https://discuss.elastic.co/u/Marco_Liberati)\
**Post date:** [January 19, 2026, 8:34am UTC](https://discuss.elastic.co/t/kibana-tsvb-shows-keyword-string-as-empty/384577/3 "2026-01-19T08:34:24Z")

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There’s a similar existing issue: [[TSVB] `/` in TSVB legend is converted to `(empty)` term · Issue #214067 · elastic/kibana · GitHub](https://github.com/elastic/kibana/issues/214067)

Given there’s a solution using the Lens editor I’d say it’s best to migrate the TSVB visualization to it.