diff --git a/guide/engine/src/components/climate-sim/BiomeReference.tsx b/guide/engine/src/components/climate-sim/BiomeReference.tsx
index 197baa8c..c7233612 100644
--- a/guide/engine/src/components/climate-sim/BiomeReference.tsx
+++ b/guide/engine/src/components/climate-sim/BiomeReference.tsx
@@ -4,7 +4,7 @@ import styled from 'styled-components'
 import { MapOverlayPanel, PanelSectionLabel } from './MapOverlayPanel'
 
 // ---------------------------------------------------------------------------
-// Biome classification tree — mirrors EcologyPhysics.generated.ts classifyBiome
+// Biome classification tree — mirrors biomeClassifier.ts classifyBiome
 // Each node shows the decision path that produces a biome.
 // ---------------------------------------------------------------------------