diff --git a/src/server/game/Gm.go b/src/server/game/Gm.go
index a5a85253..a83948e7 100644
--- a/src/server/game/Gm.go
+++ b/src/server/game/Gm.go
@@ -147,6 +147,9 @@ func ReqGmCommand_(player *Player, Command string) error {
 		player.Charge(ChargeId)
 	case "AddPart":
 		ChessMod := player.PlayMod.getChessMod()
+		if ChessMod.PartBag.List == nil {
+			ChessMod.PartBag.List = make(map[int]chess.PartBagGrid)
+		}
 		ChessMod.PartBag.List[1505] = chess.PartBagGrid{
 			Num:    10000,
 			PartId: 1505,