diff --git a/src/video/win32/SDL_win32events.c b/src/video/win32/SDL_win32events.c
index df4a3b722..6d30beee8 100644
--- a/src/video/win32/SDL_win32events.c
+++ b/src/video/win32/SDL_win32events.c
@@ -703,7 +703,7 @@ SDL_RegisterApp(char *name, Uint32 style, void *hInst)
     class.hbrBackground = NULL;
     class.hInstance = SDL_Instance;
     class.style = SDL_Appstyle;
-    class.lpfnWndProc = DefWindowProc;
+    class.lpfnWndProc = WIN_WindowProc;
     class.cbWndExtra = 0;
     class.cbClsExtra = 0;
     if (!RegisterClass(&class)) {
diff --git a/src/video/win32/SDL_win32window.c b/src/video/win32/SDL_win32window.c
index f69d38573..d69ba6a63 100644
--- a/src/video/win32/SDL_win32window.c
+++ b/src/video/win32/SDL_win32window.c
@@ -112,7 +112,7 @@ SetupWindowData(_THIS, SDL_Window * window, HWND hwnd, SDL_bool created)
 
     /* Set up the window proc function */
     data->wndproc = (WNDPROC) GetWindowLongPtr(hwnd, GWLP_WNDPROC);
-    if (data->wndproc == DefWindowProc) {
+    if (data->wndproc == WIN_WindowProc) {
         data->wndproc = NULL;
     }
     SetWindowLongPtr(hwnd, GWLP_WNDPROC, (LONG_PTR) WIN_WindowProc);