diff --git a/umadump/ism/ism.go b/umadump/ism/ism.go
index fcc688d..bc58d0d 100644
--- a/umadump/ism/ism.go
+++ b/umadump/ism/ism.go
@@ -344,6 +344,5 @@ type WorkIdleSingleMode struct {
 	ProgressInfo ProgressInfo              `json:"progress_info"`
 	ProgressLog  IdleSingleModeProgressLog `json:"progress_log_info"`
 	End          End                       `json:"end_info"`
-	OldChara     *SingleModeChara          `json:"chara_info"`
 	Extra        map[string]any            `json:"extra_data"`
 }