diff --git a/docs/content/primary-key-table/compaction.md b/docs/content/primary-key-table/compaction.md
index ada7e0289b35..bee8c16e46e9 100644
--- a/docs/content/primary-key-table/compaction.md
+++ b/docs/content/primary-key-table/compaction.md
@@ -76,7 +76,6 @@ In compaction, you can configure record-Level expire time to expire records, you
 
 1. `'record-level.expire-time'`: time retain for records.
 2. `'record-level.time-field'`: time field for record level expire.
-3. `'record-level.time-field-type'`: time field type for record level expire, it can be seconds-int,seconds-long or millis-long.
 
 Expiration happens in compaction, and there is no strong guarantee to expire records in time.