diff --git a/system-variables.md b/system-variables.md
index 8048345c154c9..c7ca2d78fb5bb 100644
--- a/system-variables.md
+++ b/system-variables.md
@@ -2010,13 +2010,13 @@ mysql> SELECT job_info FROM mysql.analyze_jobs ORDER BY end_time DESC LIMIT 1;
 
 > **Warning:**
 >
-> Starting from v8.3.0, this variable is deprecated. TiDB tracks predicate columns by default. For more information, see [`tidb_analyze_column_options`](#tidb_analyze_column_options-new-in-v830).
+> Starting from v8.3.0, this variable is deprecated. TiDB tracks predicate columns **by default**, and the behavior is not affected by the value of this variable. For more information, see [`tidb_analyze_column_options`](#tidb_analyze_column_options-new-in-v830).
 
 - Scope: GLOBAL
 - Persists to cluster: Yes
 - Applies to hint [SET_VAR](/optimizer-hints.md#set_varvar_namevar_value): No
 - Type: Boolean
-- Default value: `OFF`
+- Default value: `ON`. Before v8.x.0, the default value is `OFF`.
 - This variable controls whether to enable TiDB to collect `PREDICATE COLUMNS`. After enabling the collection, if you disable it, the information of previously collected `PREDICATE COLUMNS` is cleared. For details, see [Collect statistics on some columns](/statistics.md#collect-statistics-on-some-columns).
 
 ### tidb_enable_enhanced_security