diff --git a/packages/engine-ts/src/biomeRegistry.ts b/packages/engine-ts/src/biomeRegistry.ts
index b2d1c93e..8a4927f0 100644
--- a/packages/engine-ts/src/biomeRegistry.ts
+++ b/packages/engine-ts/src/biomeRegistry.ts
@@ -143,7 +143,7 @@ export function cartoColorByIndex(idx: number): [number, number, number] {
 
 /**
  * Climate engine → classifier biome normalization.
- * The GDScript climate engine (ClimatePhysics.generated.ts) assigns map-gen
+ * The Rust climate engine (physics-rs) assigns map-gen
  * terrain IDs during simulation (freezing, thawing, events, sea level changes).
  * This map translates them to the 26 classifier biomes for rendering.
  * When the GDScript source is updated to use classifier IDs, remove this map.