diff --git a/src/main/scala/com/github/unchama/seichiassist/listener/PlayerInventoryListener.scala b/src/main/scala/com/github/unchama/seichiassist/listener/PlayerInventoryListener.scala
index d320a98574..9371b85643 100644
--- a/src/main/scala/com/github/unchama/seichiassist/listener/PlayerInventoryListener.scala
+++ b/src/main/scala/com/github/unchama/seichiassist/listener/PlayerInventoryListener.scala
@@ -46,8 +46,8 @@ class PlayerInventoryListener(
     // エラー分岐
     val inventory = event.getInventory
 
-    // インベントリサイズが36でない時終了
-    if (inventory.row != 4) return
+    // インベントリサイズが54でない時終了
+    if (inventory.row != 6) return
 
     if (inventory.getTitle != s"$LIGHT_PURPLE${BOLD}交換したい鉱石を入れてください") return
 
diff --git a/src/main/scala/com/github/unchama/seichiassist/menus/stickmenu/FirstPage.scala b/src/main/scala/com/github/unchama/seichiassist/menus/stickmenu/FirstPage.scala
index 02262db2d1..8724203955 100644
--- a/src/main/scala/com/github/unchama/seichiassist/menus/stickmenu/FirstPage.scala
+++ b/src/main/scala/com/github/unchama/seichiassist/menus/stickmenu/FirstPage.scala
@@ -741,7 +741,7 @@ object FirstPage extends Menu {
           // TODO メニューに置き換える
           openInventoryEffect(
             InventoryUtil.createInventory(
-              size = 4.chestRows,
+              size = 6.chestRows,
               title = Some(s"$LIGHT_PURPLE${BOLD}交換したい鉱石を入れてください")
             )
           )