diff --git a/ep_setup/ep_setup.c b/ep_setup/ep_setup.c
index fb737c4..c4a6cb5 100644
--- a/ep_setup/ep_setup.c
+++ b/ep_setup/ep_setup.c
@@ -440,11 +440,6 @@ BOOL DownloadResource(BOOL bInstall, LPCWSTR pwszURL, DWORD dwSize, LPCSTR chash
     return bOk;
 }
 
-LRESULT CALLBACK OwnerWindowWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
-{
-    return DefWindowProcW(hWnd, message, wParam, lParam);
-}
-
 int WINAPI wWinMain(
     _In_ HINSTANCE hInstance,
     _In_opt_ HINSTANCE hPrevInstance,