diff --git a/dlls/d3d9/d3d9_private.h b/dlls/d3d9/d3d9_private.h
index 2b5a5c76cfa..d814dd002ca 100644
--- a/dlls/d3d9/d3d9_private.h
+++ b/dlls/d3d9/d3d9_private.h
@@ -289,20 +289,6 @@ HRESULT indexbuffer_init(IDirect3DIndexBuffer9Impl *buffer, IDirect3DDevice9Impl
         UINT size, DWORD usage, D3DFORMAT format, D3DPOOL pool) DECLSPEC_HIDDEN;
 IDirect3DIndexBuffer9Impl *unsafe_impl_from_IDirect3DIndexBuffer9(IDirect3DIndexBuffer9 *iface) DECLSPEC_HIDDEN;
 
-/* --------------------- */
-/* IDirect3DBaseTexture9 */
-/* --------------------- */
-
-/*****************************************************************************
- * IDirect3DBaseTexture9 implementation structure
- */
-typedef struct IDirect3DBaseTexture9Impl
-{
-    const IDirect3DBaseTexture9Vtbl *lpVtbl;
-    LONG                    ref;
-    struct wined3d_texture *wined3d_texture;
-} IDirect3DBaseTexture9Impl;
-
 struct d3d9_texture
 {
     IDirect3DBaseTexture9 IDirect3DBaseTexture9_iface;
@@ -317,6 +303,7 @@ HRESULT texture_init(struct d3d9_texture *texture, IDirect3DDevice9Impl *device,
         UINT width, UINT height, UINT levels, DWORD usage, D3DFORMAT format, D3DPOOL pool) DECLSPEC_HIDDEN;
 HRESULT volumetexture_init(struct d3d9_texture *texture, IDirect3DDevice9Impl *device,
         UINT width, UINT height, UINT depth, UINT levels, DWORD usage, D3DFORMAT format, D3DPOOL pool) DECLSPEC_HIDDEN;
+struct d3d9_texture *unsafe_impl_from_IDirect3DBaseTexture9(IDirect3DBaseTexture9 *iface) DECLSPEC_HIDDEN;
 
 /* ----------------------- */
 /* IDirect3DStateBlock9 */
diff --git a/dlls/d3d9/device.c b/dlls/d3d9/device.c
index 20635a0fa84..943c60878b4 100644
--- a/dlls/d3d9/device.c
+++ b/dlls/d3d9/device.c
@@ -975,14 +975,17 @@ static HRESULT WINAPI IDirect3DDevice9Impl_UpdateTexture(IDirect3DDevice9Ex *ifa
         IDirect3DBaseTexture9 *src_texture, IDirect3DBaseTexture9 *dst_texture)
 {
     IDirect3DDevice9Impl *This = impl_from_IDirect3DDevice9Ex(iface);
+    struct d3d9_texture *src_impl, *dst_impl;
     HRESULT hr;
 
     TRACE("iface %p, src_texture %p, dst_texture %p.\n", iface, src_texture, dst_texture);
 
+    src_impl = unsafe_impl_from_IDirect3DBaseTexture9(src_texture);
+    dst_impl = unsafe_impl_from_IDirect3DBaseTexture9(dst_texture);
+
     wined3d_mutex_lock();
     hr = wined3d_device_update_texture(This->wined3d_device,
-            ((IDirect3DBaseTexture9Impl *)src_texture)->wined3d_texture,
-            ((IDirect3DBaseTexture9Impl *)dst_texture)->wined3d_texture);
+            src_impl->wined3d_texture, dst_impl->wined3d_texture);
     wined3d_mutex_unlock();
 
     return hr;
@@ -1717,13 +1720,16 @@ static HRESULT WINAPI IDirect3DDevice9Impl_SetTexture(IDirect3DDevice9Ex *iface,
         IDirect3DBaseTexture9 *texture)
 {
     IDirect3DDevice9Impl *device = impl_from_IDirect3DDevice9Ex(iface);
+    struct d3d9_texture *texture_impl;
     HRESULT hr;
 
     TRACE("iface %p, stage %u, texture %p.\n", iface, stage, texture);
 
+    texture_impl = unsafe_impl_from_IDirect3DBaseTexture9(texture);
+
     wined3d_mutex_lock();
     hr = wined3d_device_set_texture(device->wined3d_device, stage,
-            texture ? ((IDirect3DBaseTexture9Impl *)texture)->wined3d_texture : NULL);
+            texture_impl ? texture_impl->wined3d_texture : NULL);
     wined3d_mutex_unlock();
 
     return hr;
diff --git a/dlls/d3d9/texture.c b/dlls/d3d9/texture.c
index 3c08cc3ec77..78915968f59 100644
--- a/dlls/d3d9/texture.c
+++ b/dlls/d3d9/texture.c
@@ -1243,6 +1243,16 @@ static const IDirect3DVolumeTexture9Vtbl d3d9_texture_3d_vtbl =
     d3d9_texture_3d_AddDirtyBox,
 };
 
+struct d3d9_texture *unsafe_impl_from_IDirect3DBaseTexture9(IDirect3DBaseTexture9 *iface)
+{
+    if (!iface)
+        return NULL;
+    assert(iface->lpVtbl == (const IDirect3DBaseTexture9Vtbl *)&d3d9_texture_2d_vtbl
+            || iface->lpVtbl == (const IDirect3DBaseTexture9Vtbl *)&d3d9_texture_cube_vtbl
+            || iface->lpVtbl == (const IDirect3DBaseTexture9Vtbl *)&d3d9_texture_3d_vtbl);
+    return CONTAINING_RECORD(iface, struct d3d9_texture, IDirect3DBaseTexture9_iface);
+}
+
 static void STDMETHODCALLTYPE d3d9_texture_wined3d_object_destroyed(void *parent)
 {
     HeapFree(GetProcessHeap(), 0, parent);