diff --git a/internal/parser/diff/meta.go b/internal/parser/diff/meta.go
index c925ee5..f31286c 100644
--- a/internal/parser/diff/meta.go
+++ b/internal/parser/diff/meta.go
@@ -14,7 +14,7 @@ type Output struct {
 	CompareSpace     bool
 	AlwaysHide       bool
 	ForceQuitOnDiff  bool
-	MaxDiffLength    int `default:"2048"` // just for reference
+	MaxDiffLength    int `default:"4096"` // just for reference
 	MaxDiffLines     int `default:"50"`   // just for reference
 	HideCommonPrefix bool
 }
diff --git a/internal/parser/diff/parser.go b/internal/parser/diff/parser.go
index 7613edc..7133483 100644
--- a/internal/parser/diff/parser.go
+++ b/internal/parser/diff/parser.go
@@ -119,7 +119,7 @@ func (d *Diff) processOutput(output Output, result stage.ExecutorResult, conf *C
 // generateDiffComment generates a diff comment for the given strings.
 func (d *Diff) generateDiffComment(answerStr, resultStr string, output Output) string {
 	if output.MaxDiffLength == 0 { // real default value
-		output.MaxDiffLength = 2048
+		output.MaxDiffLength = 4096
 	}
 	if output.MaxDiffLines == 0 { // real default value
 		output.MaxDiffLines = 50