diff --git a/modules/actions/log.go b/modules/actions/log.go
index e0061f4f75..3868101992 100644
--- a/modules/actions/log.go
+++ b/modules/actions/log.go
@@ -25,7 +25,7 @@ const (
 	DBFSPrefix  = "actions_log/"
 
 	timeFormat     = "2006-01-02T15:04:05.0000000Z07:00"
-	defaultBufSize = 64 * 1024
+	defaultBufSize = MaxLineSize
 )
 
 func WriteLogs(ctx context.Context, filename string, offset int64, rows []*runnerv1.LogRow) ([]int, error) {