diff --git a/src/main/java/com/jaoafa/mymaid4/command/Cmd_Body.java b/src/main/java/com/jaoafa/mymaid4/command/Cmd_Body.java
index 1145f1710..1a21e9b72 100644
--- a/src/main/java/com/jaoafa/mymaid4/command/Cmd_Body.java
+++ b/src/main/java/com/jaoafa/mymaid4/command/Cmd_Body.java
@@ -50,14 +50,14 @@ void setItemBody(CommandContext<CommandSender> context) {
             SendMessage(player, details(), "手にブロックを持ってください。");
             return;
         }
-        ItemStack head = inv.getHelmet();
-        if (head != null) {
-            if (head.getType() != Material.AIR) {
-                inv.removeItem(head);
+        ItemStack chestplate = inv.getChestplate();
+        if (chestplate != null) {
+            if (chestplate.getType() != Material.AIR) {
+                inv.removeItem(chestplate);
             }
         }
-        inv.setHelmet(hand);
-        player.getInventory().setChestplate(head);
+        inv.setChestplate(hand);
+        player.getInventory().setItemInMainHand(chestplate);
         SendMessage(player, details(), "持っていたブロックを背中に付けました。");
     }
 }
diff --git a/src/main/java/com/jaoafa/mymaid4/command/Cmd_Boots.java b/src/main/java/com/jaoafa/mymaid4/command/Cmd_Boots.java
index 7fee2a5d7..b7c7dcfad 100644
--- a/src/main/java/com/jaoafa/mymaid4/command/Cmd_Boots.java
+++ b/src/main/java/com/jaoafa/mymaid4/command/Cmd_Boots.java
@@ -50,14 +50,14 @@ void setItemBoots(CommandContext<CommandSender> context) {
             SendMessage(player, details(), "手にブロックを持ってください。");
             return;
         }
-        ItemStack head = inv.getHelmet();
-        if (head != null) {
-            if (head.getType() != Material.AIR) {
-                inv.removeItem(head);
+        ItemStack boots = inv.getBoots();
+        if (boots != null) {
+            if (boots.getType() != Material.AIR) {
+                inv.removeItem(boots);
             }
         }
-        inv.setHelmet(hand);
-        player.getInventory().setBoots(head);
+        inv.setBoots(hand);
+        player.getInventory().setItemInMainHand(boots);
         SendMessage(player, details(), "持っていたブロックを足に付けました。");
     }
 }
diff --git a/src/main/java/com/jaoafa/mymaid4/command/Cmd_Legs.java b/src/main/java/com/jaoafa/mymaid4/command/Cmd_Legs.java
index cf2f71410..b21216317 100644
--- a/src/main/java/com/jaoafa/mymaid4/command/Cmd_Legs.java
+++ b/src/main/java/com/jaoafa/mymaid4/command/Cmd_Legs.java
@@ -50,14 +50,14 @@ void setItemLegs(CommandContext<CommandSender> context) {
             SendMessage(player, details(), "手にブロックを持ってください。");
             return;
         }
-        ItemStack head = inv.getHelmet();
-        if (head != null) {
-            if (head.getType() != Material.AIR) {
-                inv.removeItem(head);
+        ItemStack leggings = inv.getLeggings();
+        if (leggings != null) {
+            if (leggings.getType() != Material.AIR) {
+                inv.removeItem(leggings);
             }
         }
-        inv.setHelmet(hand);
-        player.getInventory().setLeggings(head);
+        inv.setLeggings(hand);
+        player.getInventory().setItemInMainHand(leggings);
         SendMessage(player, details(), "持っていたブロックを足首に付けました。");
     }
 }