diff --git a/build.gradle.kts b/build.gradle.kts
index 221f1cb..09eee3f 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -9,7 +9,7 @@ plugins {
 }
 
 group = "net.azisaba"
-version = "1.15.2+6.17.0"
+version = "1.15.2+6.17.1"
 
 java {
     toolchain.languageVersion.set(JavaLanguageVersion.of(8))
diff --git a/src/main/java/com/github/mori01231/lifecore/command/LifeCoreUtilCommand.kt b/src/main/java/com/github/mori01231/lifecore/command/LifeCoreUtilCommand.kt
index 91a9a11..bbf6a5a 100644
--- a/src/main/java/com/github/mori01231/lifecore/command/LifeCoreUtilCommand.kt
+++ b/src/main/java/com/github/mori01231/lifecore/command/LifeCoreUtilCommand.kt
@@ -438,6 +438,18 @@ class LifeCoreUtilCommand(val plugin: LifeCore) : TabExecutor {
                 MapUtil.initializeMapRenderer((player as Player), player.inventory.itemInMainHand)
             }
         },
+        ResetMapId("地図IDをリセットします") {
+            override fun execute(plugin: LifeCore, player: CommandSender, args: Array<String>) {
+                player as Player
+                val meta = player.inventory.itemInMainHand.itemMeta as? MapMeta? ?: return player.sendMessage("this is not a map")
+                val mapView = meta.mapView ?: return player.sendMessage("mapView is null")
+                if (mapView.renderers.isEmpty() || mapView.renderers.filterIsInstance<CraftMapRenderer>().isNotEmpty()) {
+                    return player.sendMessage("renderers[0] is an instance of CraftMapRenderer or is null")
+                }
+                meta.mapView = Bukkit.createMap(player.world)
+                player.inventory.setItemInMainHand(player.inventory.itemInMainHand.apply { itemMeta = meta })
+            }
+        },
         FixItem("displayタグを修正します") {
             override fun execute(plugin: LifeCore, player: CommandSender, args: Array<String>) {
                 val item = (player as Player).inventory.itemInMainHand
diff --git a/src/main/java/com/github/mori01231/lifecore/util/MapUtil.kt b/src/main/java/com/github/mori01231/lifecore/util/MapUtil.kt
index 909fd38..8ccb24b 100644
--- a/src/main/java/com/github/mori01231/lifecore/util/MapUtil.kt
+++ b/src/main/java/com/github/mori01231/lifecore/util/MapUtil.kt
@@ -46,7 +46,8 @@ object MapUtil {
         if (item.type != Material.FILLED_MAP) return
         val meta = item.itemMeta as? MapMeta? ?: return
         val mapView = meta.mapView ?: return
-        if (mapView.renderers.getOrNull(0) !is CraftMapRenderer) {
+        val hasRenderer = mapView.renderers.isNotEmpty()
+        if (hasRenderer && mapView.renderers[0] !is CraftMapRenderer) {
             if (mapView is CraftMapView) mapView.render(player as CraftPlayer)
             return
         }
@@ -59,7 +60,9 @@ object MapUtil {
             } catch (_: Exception) {
                 return
             }
-        mapView.removeRenderer(mapView.renderers[0])
+        if (hasRenderer) {
+            mapView.removeRenderer(mapView.renderers[0])
+        }
         mapView.addRenderer(SerializedMapDataRenderer(serializedMapData))
         if (mapView is CraftMapView) mapView.render(player as CraftPlayer)
     }