diff --git a/Source/UI/Item/UIItemBaseWnd.h b/Source/UI/Item/UIItemBaseWnd.h
index 7f219ec11..f6571f2a1 100644
--- a/Source/UI/Item/UIItemBaseWnd.h
+++ b/Source/UI/Item/UIItemBaseWnd.h
@@ -11,6 +11,7 @@ struct UIButtonContext;
 
 class UIItemBaseWnd : public UIFrameWnd {
 public:
+  UIItemBaseWnd();
   UIItemBaseWnd(UIWindowContext& windowContext, UIFrameContext& frameContext);
   void Slot10(int x, int y, std::intptr_t value) override;
   void Slot11() override;
diff --git a/Source/UI/Item/UIItemPurchaseWnd.h b/Source/UI/Item/UIItemPurchaseWnd.h
index 02d0b440b..f02e01ca0 100644
--- a/Source/UI/Item/UIItemPurchaseWnd.h
+++ b/Source/UI/Item/UIItemPurchaseWnd.h
@@ -8,6 +8,7 @@
 
 class UIItemPurchaseWnd : public UIItemBaseWnd {
 public:
+  UIItemPurchaseWnd();
   void Slot10(int x, int y, std::intptr_t value) override;
   void Slot11() override;
   void Slot25(int x, int y) override;
diff --git a/Source/UI/Item/UIItemShopWnd.h b/Source/UI/Item/UIItemShopWnd.h
index d50ac3221..8f9b085a3 100644
--- a/Source/UI/Item/UIItemShopWnd.h
+++ b/Source/UI/Item/UIItemShopWnd.h
@@ -11,6 +11,7 @@ struct WindowReplayRecorder;
 
 class UIItemShopWnd : public UIItemBaseWnd {
 public:
+  UIItemShopWnd();
   void Slot11() override;
   void Slot10(int x, int y, std::intptr_t value) override;
   void Slot25(int x, int y) override;
diff --git a/Source/UI/Item/UIParaItemShopWnd.cpp b/Source/UI/Item/UIParaItemShopWnd.cpp
index bca4f7c53..0353f4a03 100644
--- a/Source/UI/Item/UIParaItemShopWnd.cpp
+++ b/Source/UI/Item/UIParaItemShopWnd.cpp
@@ -33,6 +33,18 @@ struct SessionItemLists {
   void ClearTradeItems();
 };
 
+// OFFSET: 0x009A7D30
+// FUNCTION: fn_13739
+UIParaItemPurchaseWnd::UIParaItemPurchaseWnd() {
+}
+
+// OFFSET: 0x009A7D90
+// FUNCTION: fn_13740
+UIParaItemShopWnd::UIParaItemShopWnd() {
+}
+
+// OFFSET: 0x009A7DF0
+
 // OFFSET: 0x009A80F0
 // FUNCTION: fn_13745
 void UIParaResultWnd::AddItem(const RawItemBasic& item, int quantity) {
diff --git a/Source/UI/Item/UIParaItemShopWnd.h b/Source/UI/Item/UIParaItemShopWnd.h
index 9a3cfabec..3f7b4c4dc 100644
--- a/Source/UI/Item/UIParaItemShopWnd.h
+++ b/Source/UI/Item/UIParaItemShopWnd.h
@@ -13,18 +13,21 @@ struct WindowResponseRecorder;
 
 class UIParaItemPurchaseWnd : public UIItemPurchaseWnd {
 public:
+  UIParaItemPurchaseWnd();
   void Slot25(int x, int y) override;
   void Slot10(int x, int y, std::intptr_t value) override;
 };
 
 class UIParaItemShopWnd : public UIItemShopWnd {
 public:
+  UIParaItemShopWnd();
   void Slot10(int x, int y, std::intptr_t value) override;
   void Slot32(int x, int y) override;
 };
 
 class UIParaResultWnd : public UIItemBaseWnd {
 public:
+  UIParaResultWnd();
   void Slot10(int x, int y, std::intptr_t value) override;
   void Slot15(int width, int height) override;
   void Slot28(int x, int y) override;