diff --git a/README-Japanese.md b/README-Japanese.md
index 5e5a49c5..377d7a38 100644
--- a/README-Japanese.md
+++ b/README-Japanese.md
@@ -515,8 +515,8 @@ Hayabusaルール、Sigmaルールはそれぞれの作者が検知した際の
 
 `./config/level_tuning.txt` の例
 ```
-id,next_level
-00000000-0000-0000-0000-000000000000,informational # sample leveltunig line
+id,new_level
+00000000-0000-0000-0000-000000000000,informational # sample level tuning line
 ```
 ルールディレクトリ内の `00000000-0000-0000-0000-000000000000` に該当するルールの脅威レベルが `informational` に書き換えられます。
 
diff --git a/README.md b/README.md
index 5742c975..4db65105 100644
--- a/README.md
+++ b/README.md
@@ -507,8 +507,8 @@ Please note that the rule file will be rewritten directly.
 
 `./config/level_tuning.txt` Sample
 ```
-id,next_level
-00000000-0000-0000-0000-000000000000,informational # sample leveltunig line
+id,new_level
+00000000-0000-0000-0000-000000000000,informational # sample level tuning line
 ```
 
 The threat level of the rule corresponding to `00000000-0000-0000-0000-000000000000` in the rules directory is rewritten to` informational`.
diff --git a/config/level_tuning.txt b/config/level_tuning.txt
index 7f43ac4d..8482d822 100644
--- a/config/level_tuning.txt
+++ b/config/level_tuning.txt
@@ -1,2 +1,2 @@
-id,next_level
-00000000-0000-0000-0000-000000000000,informational # sample leveltunig line
+id,new_level
+00000000-0000-0000-0000-000000000000,informational # sample level tuning line
diff --git a/test_files/config/level_tuning_error1.txt b/test_files/config/level_tuning_error1.txt
index c91f760d..bed1b758 100644
--- a/test_files/config/level_tuning_error1.txt
+++ b/test_files/config/level_tuning_error1.txt
@@ -1,2 +1,2 @@
-id,next_level
-12345678-1234-1234-1234-12,informational # sample leveltunig line
+id,new_level
+12345678-1234-1234-1234-12,informational # sample level tuning line
diff --git a/test_files/config/level_tuning_error2.txt b/test_files/config/level_tuning_error2.txt
index 33788388..c8c1c1e4 100644
--- a/test_files/config/level_tuning_error2.txt
+++ b/test_files/config/level_tuning_error2.txt
@@ -1,2 +1,2 @@
-id,next_level
-00000000-0000-0000-0000-000000000000,no_exist_level # sample leveltunig line
+id,new_level
+00000000-0000-0000-0000-000000000000,no_exist_level # sample level tuning line