diff --git a/tikv-configuration-file.md b/tikv-configuration-file.md
index 96383a2cc9fb7..8648baca73061 100644
--- a/tikv-configuration-file.md
+++ b/tikv-configuration-file.md
@@ -272,7 +272,7 @@ Configuration items related to storage
 + Note: The TTL feature is only available for the RawKV interface for now. You can only configure this feature when creating a new cluster because TTL uses different data formats in the storage layer. If you modify this item on an existing cluster, TiKV reports errors when it starts.
 + Default value: `false`
 
-### `ttl-poll-check-interval` <span class="version-mark">New in v5.0 GA</span>
+### `ttl-check-poll-interval` <span class="version-mark">New in v5.0 GA</span>
 
 + The interval of checking data to reclaim physical spaces. If data reaches its TTL, TiKV forcibly reclaims its physical space during the check.
 + Default value: `"12h"`