diff --git a/Source/UI/UIChangeMaterialWnd.cpp b/Source/UI/UIChangeMaterialWnd.cpp
index 506dd4c4..294ee733 100644
--- a/Source/UI/UIChangeMaterialWnd.cpp
+++ b/Source/UI/UIChangeMaterialWnd.cpp
@@ -64,9 +64,13 @@ void UIChangeMaterialWnd_List::Slot27(int x, int y) {
 // OFFSET: 0x005E2A30
 // FUNCTION: fn_03889
 void UIChangeMaterialWnd_List::Slot35(int argument) {
-  this->SendMsg(reinterpret_cast<UIWindow*>(this->unknown_00D8), argument < 0 ? 10 : 9, 0, 0, 0, 0);
+  this->SendMsg(this->m_scrollBar, argument < 0 ? 10 : 9, 0, 0, 0, 0);
 }
 
+// OFFSET: 0x005E2A70
+
+// OFFSET: 0x005E3B80
+
 // OFFSET: 0x005E44C0
 // FUNCTION: fn_03898
 void UIChangeMaterialWnd_List::ShiftSelectedIndex(int value) {
diff --git a/Source/UI/UIChangeMaterialWnd.h b/Source/UI/UIChangeMaterialWnd.h
index 297a2ebe..3a15700b 100644
--- a/Source/UI/UIChangeMaterialWnd.h
+++ b/Source/UI/UIChangeMaterialWnd.h
@@ -2,6 +2,7 @@
 #define RAGNAROK_SOURCE_UI_UICHANGEMATERIALWND_H
 
 #include "Contents/Items/ItemInfo.h"
+#include "UI/Lists/UIScrollBar.h"
 #include "UI/Window/UIFrameWnd.h"
 
 #include <cstdint>
@@ -12,6 +13,10 @@ struct MaterialSlotPos {
   /* 0004 */ int y;
 };
 
+struct MaterialListEntry {
+  /* 0000 */ unsigned char unknown_0000[0x1C];
+};
+
 class UIChangeMaterialWnd : public UIFrameWnd {
 public:
   bool Slot02() override;
@@ -43,9 +48,10 @@ public:
   /* 00CC */ int unknown_00CC;
   /* 00D0 */ int m_scrollOffset;
   /* 00D4 */ int m_previousScrollOffset;
-  /* 00D8 */ int unknown_00D8;
+  /* 00D8 */ UIScrollBar* m_scrollBar;
   /* 00DC */ std::vector<int> m_items;
-  /* 00E8 */ unsigned char unknown_00E8[0x10];
+  /* 00E8 */ std::vector<MaterialListEntry> m_entries;
+  /* 00F4 */ std::uint32_t unknown_00F4;
 };
 
 #if defined(_WIN32) && !defined(_WIN64)
@@ -59,6 +65,8 @@ static_assert(offsetof(UIChangeMaterialWnd_List, m_selectedIndex) == 0xC0);
 static_assert(offsetof(UIChangeMaterialWnd_List, m_scrollOffset) == 0xD0);
 static_assert(offsetof(UIChangeMaterialWnd_List, m_previousScrollOffset) == 0xD4);
 static_assert(offsetof(UIChangeMaterialWnd_List, m_items) == 0xDC);
+static_assert(offsetof(UIChangeMaterialWnd_List, m_entries) == 0xE8);
+static_assert(sizeof(MaterialListEntry) == 0x1C);
 #endif
 
 #endif