diff --git a/Source/Contents/Messenger/MessengerMember.cpp b/Source/Contents/Messenger/MessengerMember.cpp
index fce94e7e..df093c2e 100644
--- a/Source/Contents/Messenger/MessengerMember.cpp
+++ b/Source/Contents/Messenger/MessengerMember.cpp
@@ -225,7 +225,7 @@ int UIFriendOptionWnd::SendMsg(UIWindow* sender, int message, std::intptr_t a, s
 
 // OFFSET: 0x009A54B0
 // FUNCTION: fn_13630
-bool FriendOptionWndInfo::IsValid() const {
+int FriendOptionWndInfo::IsValid() const {
   return this->width == 280 && this->height == 120 && this->x >= 0 && this->x <= g_renderer->viewport.width - 280 && this->y >= 0 &&
          this->y <= g_renderer->viewport.height - 120;
 }
diff --git a/Source/Contents/UserData/NormalItemSlots.h b/Source/Contents/UserData/NormalItemSlots.h
index 537199f2..5a2b5f4d 100644
--- a/Source/Contents/UserData/NormalItemSlots.h
+++ b/Source/Contents/UserData/NormalItemSlots.h
@@ -125,7 +125,7 @@ struct ExchangeAcceptWndInfo : WindowPlacement {
 
 struct FriendOptionWndInfo : WindowPlacement {
   void Reset();
-  bool IsValid() const;
+  int IsValid() const;
 };
 
 struct GuildHelperWndInfo : WindowPlacement {