diff --git a/docs/01-rainbow-triangle.md b/docs/01-rainbow-triangle.md
index a19fb72..c74cdfe 100644
--- a/docs/01-rainbow-triangle.md
+++ b/docs/01-rainbow-triangle.md
@@ -439,8 +439,8 @@ to a `VkQueue`.
 > automatically during development and surface errors as log messages or
 > panics, saving hours of debugging silent GPU corruption. The tradeoff:
 > validation adds measurable overhead to every frame. In release builds,
-> disable validation by setting `DeviceDescriptor::device_type` or using
-> the `WGPU_BACKEND` environment variable to skip the validation path.
+> disable validation by omitting `InstanceFlags::VALIDATION` when creating the
+> `Instance`, or set the `WGPU_VALIDATION=0` environment variable.
 
 **Step 5 — SurfaceConfiguration:** This allocates the
 [swapchain](concepts/GLOSSARY.md#swapchain) [framebuffers](concepts/GLOSSARY.md#framebuffer).