diff --git a/Source/UI/Lists/UIChatHisBox.h b/Source/UI/Lists/UIChatHisBox.h
index 7f5a4bb7..c3467a23 100644
--- a/Source/UI/Lists/UIChatHisBox.h
+++ b/Source/UI/Lists/UIChatHisBox.h
@@ -31,6 +31,7 @@ public:
   void ShiftNaviLinks();
   void ClearNaviLinks();
   void DropOldestRecords();
+  void ResetContents();
   void ShiftItemTags();
   void PlaceItemTags(int line);
   void CopyHistory(const UIChatHisBox& other);
diff --git a/Source/UI/Lists/UIScrollBar.cpp b/Source/UI/Lists/UIScrollBar.cpp
index 87b2687e..d48abdf9 100644
--- a/Source/UI/Lists/UIScrollBar.cpp
+++ b/Source/UI/Lists/UIScrollBar.cpp
@@ -984,6 +984,17 @@ void UIChatHisBox::ClearNaviLinks() {
   }
 }
 
+// OFFSET: 0x00879E80
+// FUNCTION: fn_11221
+void UIChatHisBox::ResetContents() {
+  this->unknown_0100.clear();
+  this->unknown_010C.clear();
+  this->unknown_0118.clear();
+  this->Clear();
+  this->ClearNaviLinks();
+  this->ShiftNaviLinks();
+}
+
 // OFFSET: 0x0087CC30
 // FUNCTION: fn_11256
 void UIChatHisBox::DropOldestRecords() {