diff --git a/dlls/dxgi/adapter.c b/dlls/dxgi/adapter.c
index 7116f3fa8fe..b7d7a0a65aa 100644
--- a/dlls/dxgi/adapter.c
+++ b/dlls/dxgi/adapter.c
@@ -184,7 +184,7 @@ static HRESULT STDMETHODCALLTYPE dxgi_adapter_GetDesc1(IWineDXGIAdapter *iface,
     desc->DedicatedVideoMemory = adapter_id.video_memory;
     desc->DedicatedSystemMemory = 0; /* FIXME */
     desc->SharedSystemMemory = 0; /* FIXME */
-    memcpy(&desc->AdapterLuid, &adapter_id.adapter_luid, sizeof(desc->AdapterLuid));
+    desc->AdapterLuid = adapter_id.adapter_luid;
     desc->Flags = 0;
 
     return hr;