diff --git a/dlls/dxgi/device.c b/dlls/dxgi/device.c
index f0c38a01f95..8b320412432 100644
--- a/dlls/dxgi/device.c
+++ b/dlls/dxgi/device.c
@@ -106,9 +106,11 @@ static HRESULT STDMETHODCALLTYPE dxgi_device_SetPrivateData(IWineDXGIDevice *ifa
 static HRESULT STDMETHODCALLTYPE dxgi_device_SetPrivateDataInterface(IWineDXGIDevice *iface,
         REFGUID guid, const IUnknown *object)
 {
-    FIXME("iface %p, guid %s, object %p stub!\n", iface, debugstr_guid(guid), object);
+    struct dxgi_device *device = impl_from_IWineDXGIDevice(iface);
 
-    return E_NOTIMPL;
+    TRACE("iface %p, guid %s, object %p.\n", iface, debugstr_guid(guid), object);
+
+    return dxgi_set_private_data_interface(&device->private_store, guid, object);
 }
 
 static HRESULT STDMETHODCALLTYPE dxgi_device_GetPrivateData(IWineDXGIDevice *iface,
diff --git a/dlls/dxgi/dxgi_private.h b/dlls/dxgi/dxgi_private.h
index a22916dfbff..655dd404d81 100644
--- a/dlls/dxgi/dxgi_private.h
+++ b/dlls/dxgi/dxgi_private.h
@@ -78,6 +78,8 @@ DXGI_FORMAT dxgi_format_from_wined3dformat(enum wined3d_format_id format) DECLSP
 enum wined3d_format_id wined3dformat_from_dxgi_format(DXGI_FORMAT format) DECLSPEC_HIDDEN;
 HRESULT dxgi_set_private_data(struct wined3d_private_store *store,
         REFGUID guid, UINT data_size, const void *data) DECLSPEC_HIDDEN;
+HRESULT dxgi_set_private_data_interface(struct wined3d_private_store *store,
+        REFGUID guid, const IUnknown *object) DECLSPEC_HIDDEN;
 
 /* IDXGIFactory */
 struct dxgi_factory
diff --git a/dlls/dxgi/tests/device.c b/dlls/dxgi/tests/device.c
index be571a44b6f..b00c5e4354b 100644
--- a/dlls/dxgi/tests/device.c
+++ b/dlls/dxgi/tests/device.c
@@ -623,14 +623,14 @@ static void test_private_data(void)
     hr = IDXGIDevice_SetPrivateData(device, &dxgi_private_data_test_guid, 0, NULL);
     ok(hr == S_FALSE, "Got unexpected hr %#x.\n", hr);
     hr = IDXGIDevice_SetPrivateDataInterface(device, &dxgi_private_data_test_guid, NULL);
-    todo_wine ok(hr == S_OK, "Got unexpected hr %#x.\n", hr);
+    ok(hr == S_OK, "Got unexpected hr %#x.\n", hr);
     hr = IDXGIDevice_SetPrivateData(device, &dxgi_private_data_test_guid, ~0U, NULL);
-    todo_wine ok(hr == S_OK, "Got unexpected hr %#x.\n", hr);
+    ok(hr == S_OK, "Got unexpected hr %#x.\n", hr);
     hr = IDXGIDevice_SetPrivateData(device, &dxgi_private_data_test_guid, ~0U, NULL);
     ok(hr == S_FALSE, "Got unexpected hr %#x.\n", hr);
 
     hr = IDXGIDevice_SetPrivateDataInterface(device, &dxgi_private_data_test_guid, NULL);
-    todo_wine ok(hr == S_OK, "Got unexpected hr %#x.\n", hr);
+    ok(hr == S_OK, "Got unexpected hr %#x.\n", hr);
     size = sizeof(ptr) * 2;
     ptr = (IUnknown *)0xdeadbeef;
     hr = IDXGIDevice_GetPrivateData(device, &dxgi_private_data_test_guid, &size, &ptr);
@@ -641,25 +641,25 @@ static void test_private_data(void)
     refcount = get_refcount((IUnknown *)test_object);
     hr = IDXGIDevice_SetPrivateDataInterface(device, &dxgi_private_data_test_guid,
             (IUnknown *)test_object);
-    todo_wine ok(hr == S_OK, "Got unexpected hr %#x.\n", hr);
+    ok(hr == S_OK, "Got unexpected hr %#x.\n", hr);
     expected_refcount = refcount + 1;
     refcount = get_refcount((IUnknown *)test_object);
-    todo_wine ok(refcount == expected_refcount, "Got unexpected refcount %u, expected %u.\n", refcount, expected_refcount);
+    ok(refcount == expected_refcount, "Got unexpected refcount %u, expected %u.\n", refcount, expected_refcount);
     hr = IDXGIDevice_SetPrivateDataInterface(device, &dxgi_private_data_test_guid,
             (IUnknown *)test_object);
-    todo_wine ok(hr == S_OK, "Got unexpected hr %#x.\n", hr);
+    ok(hr == S_OK, "Got unexpected hr %#x.\n", hr);
     refcount = get_refcount((IUnknown *)test_object);
-    todo_wine ok(refcount == expected_refcount, "Got unexpected refcount %u, expected %u.\n", refcount, expected_refcount);
+    ok(refcount == expected_refcount, "Got unexpected refcount %u, expected %u.\n", refcount, expected_refcount);
 
     hr = IDXGIDevice_SetPrivateDataInterface(device, &dxgi_private_data_test_guid, NULL);
-    todo_wine ok(hr == S_OK, "Got unexpected hr %#x.\n", hr);
+    ok(hr == S_OK, "Got unexpected hr %#x.\n", hr);
     expected_refcount--;
     refcount = get_refcount((IUnknown *)test_object);
     ok(refcount == expected_refcount, "Got unexpected refcount %u, expected %u.\n", refcount, expected_refcount);
 
     hr = IDXGIDevice_SetPrivateDataInterface(device, &dxgi_private_data_test_guid,
             (IUnknown *)test_object);
-    todo_wine ok(hr == S_OK, "Got unexpected hr %#x.\n", hr);
+    ok(hr == S_OK, "Got unexpected hr %#x.\n", hr);
     size = sizeof(data);
     hr = IDXGIDevice_SetPrivateData(device, &dxgi_private_data_test_guid, size, data);
     ok(hr == S_OK, "Got unexpected hr %#x.\n", hr);
@@ -672,7 +672,7 @@ static void test_private_data(void)
 
     hr = IDXGIDevice_SetPrivateDataInterface(device, &dxgi_private_data_test_guid,
             (IUnknown *)test_object);
-    todo_wine ok(hr == S_OK, "Got unexpected hr %#x.\n", hr);
+    ok(hr == S_OK, "Got unexpected hr %#x.\n", hr);
     expected_refcount++;
     size = 2 * sizeof(ptr);
     ptr = NULL;
@@ -696,7 +696,7 @@ static void test_private_data(void)
     todo_wine ok(hr == S_OK, "Got unexpected hr %#x.\n", hr);
     todo_wine ok(size == sizeof(device), "Got unexpected size %u.\n", size);
     refcount = get_refcount((IUnknown *)test_object);
-    todo_wine ok(refcount == expected_refcount, "Got unexpected refcount %u, expected %u.\n", refcount, expected_refcount);
+    ok(refcount == expected_refcount, "Got unexpected refcount %u, expected %u.\n", refcount, expected_refcount);
 
     size = 1;
     hr = IDXGIDevice_GetPrivateData(device, &dxgi_private_data_test_guid, &size, &ptr);
diff --git a/dlls/dxgi/utils.c b/dlls/dxgi/utils.c
index 1a8db7e0215..576a9baf8ff 100644
--- a/dlls/dxgi/utils.c
+++ b/dlls/dxgi/utils.c
@@ -352,3 +352,19 @@ HRESULT dxgi_set_private_data(struct wined3d_private_store *store,
 
     return hr;
 }
+
+HRESULT dxgi_set_private_data_interface(struct wined3d_private_store *store,
+        REFGUID guid, const IUnknown *object)
+{
+    HRESULT hr;
+
+    if (!object)
+        return dxgi_set_private_data(store, guid, sizeof(object), &object);
+
+    EnterCriticalSection(&dxgi_cs);
+    hr = wined3d_private_store_set_private_data(store,
+            guid, object, sizeof(object), WINED3DSPD_IUNKNOWN);
+    LeaveCriticalSection(&dxgi_cs);
+
+    return hr;
+}