diff --git a/dlls/d3d8/volume.c b/dlls/d3d8/volume.c
index 2726880aa83..f3d1132e7f0 100644
--- a/dlls/d3d8/volume.c
+++ b/dlls/d3d8/volume.c
@@ -126,13 +126,15 @@ static HRESULT WINAPI IDirect3DVolume8Impl_SetPrivateData(IDirect3DVolume8 *ifac
         const void *pData, DWORD SizeOfData, DWORD Flags)
 {
     IDirect3DVolume8Impl *This = impl_from_IDirect3DVolume8(iface);
+    struct wined3d_resource *resource;
     HRESULT hr;
 
     TRACE("iface %p, guid %s, data %p, data_size %u, flags %#x.\n",
             iface, debugstr_guid(refguid), pData, SizeOfData, Flags);
 
     wined3d_mutex_lock();
-    hr = wined3d_volume_set_private_data(This->wined3d_volume, refguid, pData, SizeOfData, Flags);
+    resource = wined3d_volume_get_resource(This->wined3d_volume);
+    hr = wined3d_resource_set_private_data(resource, refguid, pData, SizeOfData, Flags);
     wined3d_mutex_unlock();
 
     return hr;
@@ -142,13 +144,15 @@ static HRESULT WINAPI IDirect3DVolume8Impl_GetPrivateData(IDirect3DVolume8 *ifac
         void *pData, DWORD *pSizeOfData)
 {
     IDirect3DVolume8Impl *This = impl_from_IDirect3DVolume8(iface);
+    struct wined3d_resource *resource;
     HRESULT hr;
 
     TRACE("iface %p, guid %s, data %p, data_size %p.\n",
             iface, debugstr_guid(refguid), pData, pSizeOfData);
 
     wined3d_mutex_lock();
-    hr = wined3d_volume_get_private_data(This->wined3d_volume, refguid, pData, pSizeOfData);
+    resource = wined3d_volume_get_resource(This->wined3d_volume);
+    hr = wined3d_resource_get_private_data(resource, refguid, pData, pSizeOfData);
     wined3d_mutex_unlock();
 
     return hr;
@@ -157,12 +161,14 @@ static HRESULT WINAPI IDirect3DVolume8Impl_GetPrivateData(IDirect3DVolume8 *ifac
 static HRESULT WINAPI IDirect3DVolume8Impl_FreePrivateData(IDirect3DVolume8 *iface, REFGUID refguid)
 {
     IDirect3DVolume8Impl *This = impl_from_IDirect3DVolume8(iface);
+    struct wined3d_resource *resource;
     HRESULT hr;
 
     TRACE("iface %p, guid %s.\n", iface, debugstr_guid(refguid));
 
     wined3d_mutex_lock();
-    hr = wined3d_volume_free_private_data(This->wined3d_volume, refguid);
+    resource = wined3d_volume_get_resource(This->wined3d_volume);
+    hr = wined3d_resource_free_private_data(resource, refguid);
     wined3d_mutex_unlock();
 
     return hr;
diff --git a/dlls/wined3d/volume.c b/dlls/wined3d/volume.c
index ec10d43d175..e176edc2173 100644
--- a/dlls/wined3d/volume.c
+++ b/dlls/wined3d/volume.c
@@ -173,23 +173,6 @@ void * CDECL wined3d_volume_get_parent(const struct wined3d_volume *volume)
     return volume->resource.parent;
 }
 
-HRESULT CDECL wined3d_volume_set_private_data(struct wined3d_volume *volume,
-        REFGUID guid, const void *data, DWORD data_size, DWORD flags)
-{
-    return wined3d_resource_set_private_data(&volume->resource, guid, data, data_size, flags);
-}
-
-HRESULT CDECL wined3d_volume_get_private_data(const struct wined3d_volume *volume,
-        REFGUID guid, void *data, DWORD *data_size)
-{
-    return wined3d_resource_get_private_data(&volume->resource, guid, data, data_size);
-}
-
-HRESULT CDECL wined3d_volume_free_private_data(struct wined3d_volume *volume, REFGUID guid)
-{
-    return wined3d_resource_free_private_data(&volume->resource, guid);
-}
-
 DWORD CDECL wined3d_volume_set_priority(struct wined3d_volume *volume, DWORD priority)
 {
     return resource_set_priority(&volume->resource, priority);
diff --git a/dlls/wined3d/wined3d.spec b/dlls/wined3d/wined3d.spec
index 7131b03e6c9..4483ba85d6d 100644
--- a/dlls/wined3d/wined3d.spec
+++ b/dlls/wined3d/wined3d.spec
@@ -278,15 +278,12 @@
 
 @ cdecl wined3d_volume_create(ptr long long long long long long ptr ptr ptr)
 @ cdecl wined3d_volume_decref(ptr)
-@ cdecl wined3d_volume_free_private_data(ptr ptr)
 @ cdecl wined3d_volume_from_resource(ptr)
 @ cdecl wined3d_volume_get_parent(ptr)
 @ cdecl wined3d_volume_get_priority(ptr)
-@ cdecl wined3d_volume_get_private_data(ptr ptr ptr ptr)
 @ cdecl wined3d_volume_get_resource(ptr)
 @ cdecl wined3d_volume_incref(ptr)
 @ cdecl wined3d_volume_map(ptr ptr ptr long)
 @ cdecl wined3d_volume_preload(ptr)
 @ cdecl wined3d_volume_set_priority(ptr long)
-@ cdecl wined3d_volume_set_private_data(ptr ptr ptr long long)
 @ cdecl wined3d_volume_unmap(ptr)
diff --git a/include/wine/wined3d.h b/include/wine/wined3d.h
index 40879ff6b84..99dcc370c10 100644
--- a/include/wine/wined3d.h
+++ b/include/wine/wined3d.h
@@ -2520,20 +2520,15 @@ HRESULT __cdecl wined3d_volume_create(struct wined3d_device *device, UINT width,
         DWORD usage, enum wined3d_format_id format_id, WINED3DPOOL pool, void *parent,
         const struct wined3d_parent_ops *parent_ops, struct wined3d_volume **volume);
 ULONG __cdecl wined3d_volume_decref(struct wined3d_volume *volume);
-HRESULT __cdecl wined3d_volume_free_private_data(struct wined3d_volume *volume, REFGUID guid);
 struct wined3d_volume * __cdecl wined3d_volume_from_resource(struct wined3d_resource *resource);
 void * __cdecl wined3d_volume_get_parent(const struct wined3d_volume *volume);
 DWORD __cdecl wined3d_volume_get_priority(const struct wined3d_volume *volume);
-HRESULT __cdecl wined3d_volume_get_private_data(const struct wined3d_volume *volume,
-        REFGUID guid, void *data, DWORD *data_size);
 struct wined3d_resource * __cdecl wined3d_volume_get_resource(struct wined3d_volume *volume);
 ULONG __cdecl wined3d_volume_incref(struct wined3d_volume *volume);
 HRESULT __cdecl wined3d_volume_map(struct wined3d_volume *volume,
         WINED3DLOCKED_BOX *locked_box, const WINED3DBOX *box, DWORD flags);
 void __cdecl wined3d_volume_preload(struct wined3d_volume *volume);
 DWORD __cdecl wined3d_volume_set_priority(struct wined3d_volume *volume, DWORD new_priority);
-HRESULT __cdecl wined3d_volume_set_private_data(struct wined3d_volume *volume,
-        REFGUID guid, const void *data, DWORD data_size, DWORD flags);
 HRESULT __cdecl wined3d_volume_unmap(struct wined3d_volume *volume);
 
 #endif /* __WINE_WINED3D_H */