diff --git a/redo/windows/resize.c b/redo/windows/resize.c
index 95d54f87..fae9cc7e 100644
--- a/redo/windows/resize.c
+++ b/redo/windows/resize.c
@@ -21,7 +21,8 @@ void uiWindowsControlQueueRelayout(uiWindowsControl *c)
 	uiWindowsControl *d;
 
 	// resizing a control requires us to reocmpute the sizes of everything in the top-level window
-	c = uiWindowsControl(toplevelOwning(uiControl(c)));
+	// TODO use conversion
+	c = (uiWindowsControl *) toplevelOwning(uiControl(c));
 	if (c == NULL)
 		return;
 	// make sure we're only queued once
diff --git a/redo/windows/window.c b/redo/windows/window.c
index a828bb90..e3686048 100644
--- a/redo/windows/window.c
+++ b/redo/windows/window.c
@@ -29,7 +29,8 @@ static LRESULT CALLBACK windowWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARA
 	WINDOWPOS *wp = (WINDOWPOS *) lParam;
 	LRESULT lResult;
 
-	w = uiWindow((void *) GetWindowLongPtrW(hwnd, GWLP_USERDATA));
+	// TODO change to our conversion syntax
+	w = (uiWindow *) GetWindowLongPtrW(hwnd, GWLP_USERDATA);
 	if (w == NULL) {
 		if (uMsg == WM_CREATE)
 			SetWindowLongPtrW(hwnd, GWLP_USERDATA, (LONG_PTR) (cs->lpCreateParams));