diff --git a/internal/parser/diff/meta.go b/internal/parser/diff/meta.go
index 2891d20..92e4ae2 100644
--- a/internal/parser/diff/meta.go
+++ b/internal/parser/diff/meta.go
@@ -15,7 +15,7 @@ type Conf struct {
 	Cases             []struct {
 		Outputs []struct {
 			Score            int
-			FileName         string
+			Filename         string
 			AnswerPath       string
 			CompareSpace     bool
 			AlwaysHide       bool
diff --git a/internal/parser/diff/parser.go b/internal/parser/diff/parser.go
index 78fc468..d90ddbf 100644
--- a/internal/parser/diff/parser.go
+++ b/internal/parser/diff/parser.go
@@ -40,7 +40,7 @@ func (*Diff) Run(results []stage.ExecutorResult, confAny any) (
 					return nil, true, err
 				}
 				answerStr := string(answer)
-				resultStr := result.Files[output.FileName]
+				resultStr := result.Files[output.Filename]
 				isSame := stringsEqual(
 					answerStr,
 					resultStr,
@@ -48,7 +48,7 @@ func (*Diff) Run(results []stage.ExecutorResult, confAny any) (
 				)
 				slog.Debug(
 					"compare",
-					"filename", output.FileName,
+					"filename", output.Filename,
 					"answerPath", output.AnswerPath,
 					"actualLength", len(resultStr),
 					"answerLength", len(answerStr),
@@ -65,7 +65,7 @@ func (*Diff) Run(results []stage.ExecutorResult, confAny any) (
 					}
 					comment += conf.FailComment + "\n"
 					comment += fmt.Sprintf("Difference found in `%s`\n",
-						output.FileName)
+						output.Filename)
 					if !output.AlwaysHide {
 						if output.MaxDiffLength == 0 { // real default value
 							output.MaxDiffLength = 2048
diff --git a/internal/parser/log/meta.go b/internal/parser/log/meta.go
index e697cbe..1fe270c 100644
--- a/internal/parser/log/meta.go
+++ b/internal/parser/log/meta.go
@@ -7,7 +7,7 @@ import "github.com/joint-online-judge/JOJ3/internal/stage"
 var name = "log"
 
 type Conf struct {
-	FileName string `default:"stdout"`
+	Filename string `default:"stdout"`
 	Msg      string `default:"log msg"`
 	Level    int    `default:"0"`
 }
diff --git a/internal/parser/log/parser.go b/internal/parser/log/parser.go
index 2d46c9d..107e59f 100644
--- a/internal/parser/log/parser.go
+++ b/internal/parser/log/parser.go
@@ -10,7 +10,7 @@ import (
 )
 
 func (*Log) parse(executorResult stage.ExecutorResult, conf Conf) stage.ParserResult {
-	content := executorResult.Files[conf.FileName]
+	content := executorResult.Files[conf.Filename]
 	var data map[string]any
 	err := json.Unmarshal([]byte(content), &data)
 	if err != nil {