diff --git a/Source/UI/Window/UIControl.cpp b/Source/UI/Window/UIControl.cpp
index 51bfde80..0ac1a067 100644
--- a/Source/UI/Window/UIControl.cpp
+++ b/Source/UI/Window/UIControl.cpp
@@ -4,6 +4,8 @@
 #include "UI/Lists/UIThumb.h"
 #include "UI/Edit/UIEditCtrl.h"
 #include "Client/Mode/ModeCursor.h"
+#include "Client/Mode/ModeMgr.h"
+#include "Client/Mode/ModeTooltip.h"
 #include "Resource/Bitmap/BitmapResource.h"
 #include "Resource/ResourceMgr.h"
 #include "Resource/TextureNames.h"
@@ -574,6 +576,28 @@ void CUIButton::Slot47() {
   this->SetState(2);
 }
 
+// OFFSET: 0x009EEA00
+// FUNCTION: fn_14631
+void CUIButton::Slot28(int, int) {
+  if (this->unknown_00EC) {
+    this->unknown_00EC->Slot02();
+  }
+
+  if (this->tooltip.empty()) {
+    return;
+  }
+
+  int screenX = 0;
+  int screenY = -20;
+
+  for (const UIWindow* node = this; node; node = node->parent) {
+    screenX = (screenX + node->geometry.x);
+    screenY = (screenY + node->geometry.y);
+  }
+
+  reinterpret_cast<ModeTooltip*>(g_modeMgr.gameMode)->Show(this->tooltip.c_str(), screenX, screenY, 0xFFFFFFFFu, 0, 1);
+}
+
 // OFFSET: 0x009EEA70
 // FUNCTION: fn_14632
 void CUIButton::Slot48() {
diff --git a/Source/UI/Window/UIControl.h b/Source/UI/Window/UIControl.h
index 5272c555..a8c0e117 100644
--- a/Source/UI/Window/UIControl.h
+++ b/Source/UI/Window/UIControl.h
@@ -97,6 +97,7 @@ public:
 class CUIButton : public CUIControl {
 public:
   void Slot25(int x, int y) override;
+  void Slot28(int x, int y) override;
   void Slot26(int x, int y) override;
   void ResetCursor(int x, int y) override;
   void Slot31(int argument1, int argument2) override;
@@ -107,9 +108,12 @@ public:
 
   /* 0080 */ int state;
   /* 0084 */ unsigned char disabled;
-  /* 0085 */ unsigned char unknown_0085[0x3F];
+  /* 0085 */ unsigned char unknown_0085[0x03];
+  /* 0088 */ std::string tooltip;
+  /* 00A0 */ unsigned char unknown_00A0[0x24];
   /* 00C4 */ UIWindow* unknown_00C4;
-  /* 00C8 */ unsigned char unknown_00C8[0x28];
+  /* 00C8 */ unsigned char unknown_00C8[0x24];
+  /* 00EC */ UIWindow* unknown_00EC;
 };
 
 class CUITextButton : public CUIButton {