diff --git a/servo/ports/geckolib/cbindgen.toml b/servo/ports/geckolib/cbindgen.toml
index 5388f2a79399..5f4e423b0c50 100644
--- a/servo/ports/geckolib/cbindgen.toml
+++ b/servo/ports/geckolib/cbindgen.toml
@@ -19,11 +19,8 @@ trailer = """
 #pragma GCC diagnostic pop
 #include "mozilla/ServoStyleConstsInlines.h"
 """
-autogen_warning = """/* DO NOT MODIFY THIS MANUALLY! This file was generated using cbindgen.
- * To generate this file:
- *   1. Get the latest cbindgen using `cargo install --force cbindgen`
- *      a. Alternatively, you can clone `https://github.com/eqrion/cbindgen` and use a tagged release
- *   2. Run `rustup run nightly cbindgen toolkit/library/rust/ --lockfile Cargo.lock --crate style -o layout/style/ServoStyleConsts.h`
+autogen_warning = """/* DO NOT MODIFY THIS MANUALLY! This file was generated using cbindgen. See RunCbindgen.py
+ * To modify this file, edit servo/ports/geckolib/cbindgen.toml and build Firefox.
  */
 """
 include_guard = "mozilla_ServoStyleConsts_h"