diff --git a/ComputeInputLayout.md b/ComputeInputLayout.md
index 788f4a6..0a220b1 100644
--- a/ComputeInputLayout.md
+++ b/ComputeInputLayout.md
@@ -8,7 +8,7 @@ Returns the byte offsets for each element of an input layout and the implied ver
 
 _vbDecl_: Input layout description, which is nDecl elements long.
 
-_offsets_: Must have nDecl elements of space.
+_offsets_: Must have nDecl elements of space. Can be nullptr.
 
 _strides_: Must have ``D3D11_IA_VERTEX_INPUT_RESOURCE_SLOT_COUNT`` of space. Can be nullptr.