diff --git a/include/vkd3d_d3d12.idl b/include/vkd3d_d3d12.idl
index a72732e4..c8a5341c 100644
--- a/include/vkd3d_d3d12.idl
+++ b/include/vkd3d_d3d12.idl
@@ -3260,7 +3260,7 @@ interface ID3D12Device : ID3D12Object
             D3D12_DESCRIPTOR_HEAP_TYPE descriptor_heap_type);
 
     D3D12_RESOURCE_ALLOCATION_INFO GetResourceAllocationInfo(UINT visible_mask,
-            UINT reource_desc_count, const D3D12_RESOURCE_DESC *resource_descs);
+            UINT resource_desc_count, const D3D12_RESOURCE_DESC *resource_descs);
 
     D3D12_HEAP_PROPERTIES GetCustomHeapProperties(UINT node_mask,
             D3D12_HEAP_TYPE heap_type);
diff --git a/include/vkd3d_dxgi.idl b/include/vkd3d_dxgi.idl
index 7e07a78d..0682935b 100644
--- a/include/vkd3d_dxgi.idl
+++ b/include/vkd3d_dxgi.idl
@@ -146,7 +146,7 @@ interface IDXGIFactory : IDXGIObject
 ]
 interface IDXGIFactory1 : IDXGIFactory
 {
-    HRESULT EnumAdapters1(UINT adapter_idx, IDXGIAdapter1 **adpter);
+    HRESULT EnumAdapters1(UINT adapter_idx, IDXGIAdapter1 **adapter);
     BOOL IsCurrent();
 }