diff --git a/src/video/win32/SDL_d3drender.c b/src/video/win32/SDL_d3drender.c
index 90baf9bd3..9565d9cc3 100644
--- a/src/video/win32/SDL_d3drender.c
+++ b/src/video/win32/SDL_d3drender.c
@@ -1283,6 +1283,7 @@ D3D_RenderWritePixels(SDL_Renderer * renderer, const SDL_Rect * rect,
                       Uint32 format, const void * pixels, int pitch)
 {
     /* Work in progress */
+    SDL_Unsupported();
     return -1;
 }