diff --git a/build.gradle.kts b/build.gradle.kts
index 0b6f844..78a07de 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -10,7 +10,7 @@ plugins {
 }
 
 group = "net.azisaba"
-version = "6.18.2+1.21.1"
+version = "6.18.4+1.21.1"
 
 java {
     toolchain.languageVersion.set(JavaLanguageVersion.of(21))
diff --git a/src/main/java/com/github/mori01231/lifecore/LifeCore.kt b/src/main/java/com/github/mori01231/lifecore/LifeCore.kt
index cc7c34b..b122bd2 100644
--- a/src/main/java/com/github/mori01231/lifecore/LifeCore.kt
+++ b/src/main/java/com/github/mori01231/lifecore/LifeCore.kt
@@ -332,6 +332,7 @@ class LifeCore : JavaPlugin() {
         pm.registerEvents(PicksawItemListener(dataLoader), this)
         pm.registerEvents(BlockListener, this)
         pm.registerEvents(MapListScreen.EventListener, this)
+        pm.registerEvents(PlayerQuitListener, this)
 
         // Items
         pm.registerEvents(OreOnlyItemListener(), this)
diff --git a/src/main/java/com/github/mori01231/lifecore/listener/PlayerQuitListener.kt b/src/main/java/com/github/mori01231/lifecore/listener/PlayerQuitListener.kt
new file mode 100644
index 0000000..6ff2c81
--- /dev/null
+++ b/src/main/java/com/github/mori01231/lifecore/listener/PlayerQuitListener.kt
@@ -0,0 +1,18 @@
+package com.github.mori01231.lifecore.listener
+
+import com.github.mori01231.lifecore.LifeCore
+import com.github.mori01231.lifecore.util.MapUtil
+import org.bukkit.Bukkit
+import org.bukkit.event.EventHandler
+import org.bukkit.event.Listener
+import org.bukkit.event.player.PlayerQuitEvent
+import org.bukkit.plugin.java.JavaPlugin
+
+object PlayerQuitListener : Listener {
+    @EventHandler
+    fun onPlayerQuit(e: PlayerQuitEvent) {
+        Bukkit.getScheduler().runTaskAsynchronously(JavaPlugin.getPlugin(LifeCore::class.java), Runnable {
+            MapUtil.renderedMapViews.removeIf { it.first == e.player.uniqueId }
+        })
+    }
+}
diff --git a/src/main/java/com/github/mori01231/lifecore/listener/PromptSignListener.kt b/src/main/java/com/github/mori01231/lifecore/listener/PromptSignListener.kt
index fdc5cad..d64ee1a 100644
--- a/src/main/java/com/github/mori01231/lifecore/listener/PromptSignListener.kt
+++ b/src/main/java/com/github/mori01231/lifecore/listener/PromptSignListener.kt
@@ -9,6 +9,6 @@ import org.bukkit.event.Listener
 object PromptSignListener : Listener {
     @EventHandler(priority = EventPriority.MONITOR, ignoreCancelled = true)
     fun onSign(e: AsyncPreSignChangeEvent) {
-        PromptSign.awaitingSign[e.player.uniqueId]?.invoke(e.lines.toList())
+        PromptSign.awaitingSign.remove(e.player.uniqueId)?.invoke(e.lines.toList())
     }
 }
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 6d4c90e..e5797a9 100644
--- a/src/main/java/com/github/mori01231/lifecore/util/MapUtil.kt
+++ b/src/main/java/com/github/mori01231/lifecore/util/MapUtil.kt
@@ -22,6 +22,7 @@ import org.bukkit.map.MapRenderer
 import org.bukkit.map.MapView
 import org.bukkit.plugin.java.JavaPlugin
 import java.util.Collections
+import java.util.UUID
 
 object MapUtil {
     private fun convertCanvasToSerializable(canvas: MapCanvas) =
@@ -57,7 +58,7 @@ object MapUtil {
         return null
     }
 
-    private val renderedMapViews = Collections.synchronizedList(mutableListOf<Pair<Player, CraftMapView>>())
+    val renderedMapViews = Collections.synchronizedList(mutableListOf<Pair<UUID, Int>>())
 
     fun initializeMapRenderer(player: Player, item: ItemStack) {
         if (item.type != Material.FILLED_MAP) return
@@ -66,8 +67,8 @@ object MapUtil {
         val hasRenderer = mapView.renderers.isNotEmpty()
         if (hasRenderer && mapView.renderers[0] !is CraftMapRenderer) {
             if (mapView is CraftMapView) {
-                if (renderedMapViews.contains(player to mapView)) return
-                renderedMapViews.add(player to mapView)
+                if (renderedMapViews.contains(player.uniqueId to mapView.id)) return
+                renderedMapViews.add(player.uniqueId to mapView.id)
                 Bukkit.getScheduler().runTask(JavaPlugin.getPlugin(LifeCore::class.java), Runnable {
                     mapView.render(player as CraftPlayer)
                 })