diff --git a/gfx/d3d/d3d_wrapper.cpp b/gfx/d3d/d3d_wrapper.cpp
index 8fb6533dbb..1693f160a3 100644
--- a/gfx/d3d/d3d_wrapper.cpp
+++ b/gfx/d3d/d3d_wrapper.cpp
@@ -266,9 +266,8 @@ void d3d_lockrectangle_clear(void *data,
       unsigned rectangle_height, unsigned flags)
 {
 #if defined(_XBOX)
-   d3d_video_t *d3d = (d3d_video_t*)data;
    D3DTexture_LockRect(tex, level, lock_rect, rect, flags);
-   memset(lock_rect->pBits, 0, d3d->tex_h * lock_rect->Pitch);
+   memset(lock_rect->pBits, 0, rectangle_height * lock_rect->Pitch);
 #else
    if (SUCCEEDED(tex->LockRect(level, lock_rect, rect, flags)))
    {
diff --git a/gfx/d3d/render_chain_xdk.cpp b/gfx/d3d/render_chain_xdk.cpp
index 41f7e999a0..b4898cbc1e 100644
--- a/gfx/d3d/render_chain_xdk.cpp
+++ b/gfx/d3d/render_chain_xdk.cpp
@@ -220,7 +220,7 @@ static void renderchain_blit_to_texture(void *data, const void *frame,
    if (d3d->last_width != width || d3d->last_height != height)
    {
       d3d_lockrectangle_clear(d3d, d3d->tex,
-            0, &d3dlr, NULL, 0 /* FIXME - stub */, D3DLOCK_NOSYSLOCK);
+            0, &d3dlr, NULL, d3d->tex_h, D3DLOCK_NOSYSLOCK);
    }
 
    d3d_texture_blit(driver->video_data, 0, d3d->tex,