diff --git a/Source/UI/Window/UINormalMB.cpp b/Source/UI/Window/UINormalMB.cpp
index b30ff03b..f8673b58 100644
--- a/Source/UI/Window/UINormalMB.cpp
+++ b/Source/UI/Window/UINormalMB.cpp
@@ -2,6 +2,12 @@
 #include "UI/Text/UITextViewer.h"
 #include "UI/Window/UIWindowMgr.h"
 
+// OFFSET: 0x00946C00
+// FUNCTION: fn_12851
+UINormalMB::UINormalMB(UIWindowContext& windows, UIFrameContext& frames) : UIFrameWnd(windows, frames, 0), m_owner(nullptr), m_viewer(nullptr) {
+  this->m_keepOpen = 0;
+}
+
 // OFFSET: 0x00950740
 // FUNCTION: fn_12943
 int UINormalMB::SendMsg(UIWindow* sender, int message, std::intptr_t a, std::intptr_t b, std::intptr_t c, std::intptr_t d) {
diff --git a/Source/UI/Window/UINormalMB.h b/Source/UI/Window/UINormalMB.h
index 00786455..c10c2453 100644
--- a/Source/UI/Window/UINormalMB.h
+++ b/Source/UI/Window/UINormalMB.h
@@ -4,17 +4,20 @@
 #include "UI/Window/UIFrameWnd.h"
 
 #include <map>
+#include <string>
 
 class UITextViewer;
 
 class UINormalMB : public UIFrameWnd {
 public:
+  UINormalMB(UIWindowContext& windows, UIFrameContext& frames);
   int SendMsg(UIWindow* sender, int message, std::intptr_t a, std::intptr_t b, std::intptr_t c, std::intptr_t d) override;
 
 protected:
   /* 00B4 */ UIWindow* m_owner;
   /* 00B8 */ UITextViewer* m_viewer;
-  /* 00BC */ unsigned char unknown_00BC[0x30];
+  /* 00BC */ std::string unknown_00BC;
+  /* 00D4 */ std::string unknown_00D4;
   /* 00EC */ unsigned char m_keepOpen;
   /* 00F0 */ std::map<int, void (*)()> m_actions;
 };