diff --git a/libs/vkd3d/device.c b/libs/vkd3d/device.c
index 39fdab1b..42db7c5c 100644
--- a/libs/vkd3d/device.c
+++ b/libs/vkd3d/device.c
@@ -2430,11 +2430,6 @@ void d3d12_device_return_query_pool(struct d3d12_device *device, const struct vk
 }
 
 /* ID3D12Device */
-static inline struct d3d12_device *impl_from_ID3D12Device(d3d12_device_iface *iface)
-{
-    return CONTAINING_RECORD(iface, struct d3d12_device, ID3D12Device_iface);
-}
-
 extern ULONG STDMETHODCALLTYPE d3d12_device_vkd3d_ext_AddRef(ID3D12DeviceExt *iface);
 
 HRESULT STDMETHODCALLTYPE d3d12_device_QueryInterface(d3d12_device_iface *iface,
@@ -4545,7 +4540,7 @@ static HRESULT STDMETHODCALLTYPE d3d12_device_SetBackgroundProcessingMode(d3d12_
     return E_NOTIMPL;
 }
 
-static CONST_VTBL struct ID3D12Device6Vtbl d3d12_device_vtbl =
+CONST_VTBL struct ID3D12Device6Vtbl d3d12_device_vtbl =
 {
     /* IUnknown methods */
     d3d12_device_QueryInterface,
@@ -5163,21 +5158,6 @@ static bool d3d12_device_supports_feature_level(struct d3d12_device *device, D3D
     return feature_level <= device->d3d12_caps.max_feature_level;
 }
 
-struct d3d12_device *unsafe_impl_from_ID3D12Device(d3d12_device_iface *iface)
-{
-    if (!iface)
-        return NULL;
-
-#ifdef VKD3D_ENABLE_PROFILING
-    assert(iface->lpVtbl == &d3d12_device_vtbl ||
-           iface->lpVtbl == &d3d12_device_vtbl_profiled);
-#else
-    assert(iface->lpVtbl == &d3d12_device_vtbl);
-#endif
-
-    return impl_from_ID3D12Device(iface);
-}
-
 extern CONST_VTBL struct ID3D12DeviceExtVtbl d3d12_device_vkd3d_ext_vtbl;
 
 static HRESULT d3d12_device_init(struct d3d12_device *device,
diff --git a/libs/vkd3d/device_profiled.h b/libs/vkd3d/device_profiled.h
index 2d578600..228bc739 100644
--- a/libs/vkd3d/device_profiled.h
+++ b/libs/vkd3d/device_profiled.h
@@ -215,7 +215,7 @@ static HRESULT STDMETHODCALLTYPE d3d12_device_CreatePipelineState_profiled(d3d12
     DEVICE_PROFILED_CALL_HRESULT(CreatePipelineState, iface, desc, riid, pipeline_state);
 }
 
-static CONST_VTBL struct ID3D12Device6Vtbl d3d12_device_vtbl_profiled =
+CONST_VTBL struct ID3D12Device6Vtbl d3d12_device_vtbl_profiled =
 {
     /* IUnknown methods */
     d3d12_device_QueryInterface,
diff --git a/libs/vkd3d/resource.c b/libs/vkd3d/resource.c
index 86c5af7a..f5f033ff 100644
--- a/libs/vkd3d/resource.c
+++ b/libs/vkd3d/resource.c
@@ -2742,7 +2742,7 @@ fail:
 VKD3D_EXPORT HRESULT vkd3d_create_image_resource(ID3D12Device *device,
         const struct vkd3d_image_resource_create_info *create_info, ID3D12Resource **resource)
 {
-    struct d3d12_device *d3d12_device = unsafe_impl_from_ID3D12Device((d3d12_device_iface *)device);
+    struct d3d12_device *d3d12_device = impl_from_ID3D12Device((d3d12_device_iface *)device);
     struct d3d12_resource *object;
     HRESULT hr;
 
diff --git a/libs/vkd3d/vkd3d_private.h b/libs/vkd3d/vkd3d_private.h
index dd00b78b..42af8418 100644
--- a/libs/vkd3d/vkd3d_private.h
+++ b/libs/vkd3d/vkd3d_private.h
@@ -2813,7 +2813,26 @@ void d3d12_device_unmap_vkd3d_queue(struct d3d12_device *device,
 bool d3d12_device_is_uma(struct d3d12_device *device, bool *coherent);
 void d3d12_device_mark_as_removed(struct d3d12_device *device, HRESULT reason,
         const char *message, ...) VKD3D_PRINTF_FUNC(3, 4);
-struct d3d12_device *unsafe_impl_from_ID3D12Device(d3d12_device_iface *iface);
+
+static inline struct d3d12_device *impl_from_ID3D12Device(d3d12_device_iface *iface)
+{
+    extern CONST_VTBL struct ID3D12Device6Vtbl d3d12_device_vtbl;
+#ifdef VKD3D_ENABLE_PROFILING
+    extern CONST_VTBL struct ID3D12Device6Vtbl d3d12_device_vtbl_profiled;
+#endif
+    if (!iface)
+        return NULL;
+
+#ifdef VKD3D_ENABLE_PROFILING
+    assert(iface->lpVtbl == &d3d12_device_vtbl ||
+           iface->lpVtbl == &d3d12_device_vtbl_profiled);
+#else
+    assert(iface->lpVtbl == &d3d12_device_vtbl);
+#endif
+
+    return CONTAINING_RECORD(iface, struct d3d12_device, ID3D12Device_iface);
+}
+
 bool d3d12_device_validate_shader_meta(struct d3d12_device *device, const struct vkd3d_shader_meta *meta);
 
 HRESULT d3d12_device_get_scratch_buffer(struct d3d12_device *device, VkDeviceSize min_size, struct vkd3d_scratch_buffer *scratch);