diff --git a/saco/chatwindow.cpp b/saco/chatwindow.cpp
index 9c09efa..d2a50ca 100644
--- a/saco/chatwindow.cpp
+++ b/saco/chatwindow.cpp
@@ -184,3 +184,18 @@ void CChatWindow::SetPageSize(int iPageSize)
 		m_bRedraw = 1;
 	}
 }
+
+//----------------------------------------------------
+
+void CChatWindow::ReplaceControlChars(char *szString)
+{
+	if(*szString)
+	{
+		do
+		{
+			if(*szString > 0 && *szString < 32)
+				*szString = 32;
+		}
+		while(*++szString);
+	}
+}
diff --git a/saco/chatwindow.h b/saco/chatwindow.h
index b7fc7c9..9a9e12b 100644
--- a/saco/chatwindow.h
+++ b/saco/chatwindow.h
@@ -51,6 +51,8 @@ public:
 
 	void FUNC_10067200();
 
+	void ReplaceControlChars(char *szString); // .text:10067420
+
 	void FUNC_10067E00(); // .text:10067E00
 
 	void FUNC_10067ED0(); // .text:10067ED0