diff --git a/src/lib/arch/win32/ArchMiscWindows.cpp b/src/lib/arch/win32/ArchMiscWindows.cpp
index c470d0d6c..5bc434df0 100644
--- a/src/lib/arch/win32/ArchMiscWindows.cpp
+++ b/src/lib/arch/win32/ArchMiscWindows.cpp
@@ -256,11 +256,6 @@ ArchMiscWindows::readValueInt(HKEY key, const TCHAR *name)
   return value;
 }
 
-void ArchMiscWindows::addDialog(HWND hwnd)
-{
-  s_dialogs->insert(hwnd);
-}
-
 void ArchMiscWindows::removeDialog(HWND hwnd)
 {
   s_dialogs->erase(hwnd);
diff --git a/src/lib/arch/win32/ArchMiscWindows.h b/src/lib/arch/win32/ArchMiscWindows.h
index f07ea56c6..262870c79 100644
--- a/src/lib/arch/win32/ArchMiscWindows.h
+++ b/src/lib/arch/win32/ArchMiscWindows.h
@@ -101,9 +101,6 @@ public:
   //! Read a DWORD value from the registry
   static DWORD readValueInt(HKEY, const TCHAR *name);
 
-  //! Add a dialog
-  static void addDialog(HWND);
-
   //! Remove a dialog
   static void removeDialog(HWND);