diff --git a/docs/hint_details.md b/docs/hint_details.md
index c95fbb9d..4d00c4fb 100644
--- a/docs/hint_details.md
+++ b/docs/hint_details.md
@@ -200,6 +200,6 @@ zero workers prevents a scan from being executed in parallel.
 `pg_hint_plan` parameters influence their own behavior so some parameters
 will not work as one could expect:
 
--   Hints to change `enable_hint`, `enable_hint_tables` are ignored even though
+-   Hints to change `enable_hint`, `enable_hint_table` are ignored even though
     they are reported as "used hints" in debug logs.
 -   Setting `debug_print` and `message_level` in the middle of query processing.
diff --git a/docs/installation.md b/docs/installation.md
index 32608e67..e82e202c 100644
--- a/docs/installation.md
+++ b/docs/installation.md
@@ -27,5 +27,5 @@ postgres=# LOAD 'pg_hint_plan';
 LOAD
 ```
 
-Run `CREATE EXTENSION` and `SET pg_hint_plan.enable_hint_tables TO on` if you
+Run `CREATE EXTENSION` and `SET pg_hint_plan.enable_hint_table TO on` if you
 are planning to use the hint table.
diff --git a/docs/locale/ja/LC_MESSAGES/hint_details.po b/docs/locale/ja/LC_MESSAGES/hint_details.po
index 55f70e74..a537bffc 100644
--- a/docs/locale/ja/LC_MESSAGES/hint_details.po
+++ b/docs/locale/ja/LC_MESSAGES/hint_details.po
@@ -220,7 +220,7 @@ msgstr ""
 
 #: ../../hint_details.md:205 10066ce8166649fc9fe54bc761e2c721
 msgid ""
-"Hints to change `enable_hint`, `enable_hint_tables` are ignored even "
+"Hints to change `enable_hint`, `enable_hint_table` are ignored even "
 "though they are reported as \"used hints\" in debug logs."
 msgstr ""
 
diff --git a/docs/locale/ja/LC_MESSAGES/installation.po b/docs/locale/ja/LC_MESSAGES/installation.po
index 766e05c4..d9d1ffca 100644
--- a/docs/locale/ja/LC_MESSAGES/installation.po
+++ b/docs/locale/ja/LC_MESSAGES/installation.po
@@ -54,7 +54,7 @@ msgstr ""
 
 #: ../../installation.md:29 506611680a634c4596a30674af5905ff
 msgid ""
-"Do `CREATE EXTENSION` and `SET pg_hint_plan.enable_hint_tables TO on` if "
+"Do `CREATE EXTENSION` and `SET pg_hint_plan.enable_hint_table TO on` if "
 "you are planning to use the hint table."
 msgstr ""