diff --git a/packages/tiler-sharp/src/index.ts b/packages/tiler-sharp/src/index.ts
index be062ea84..ca98880af 100644
--- a/packages/tiler-sharp/src/index.ts
+++ b/packages/tiler-sharp/src/index.ts
@@ -145,6 +145,7 @@ export class TileMakerSharp implements TileMaker {
     if (resize) {
       const resizeOptions = { fit: Sharp.fit.cover, kernel: resize.scaleX > 1 ? resizeKernel.in : resizeKernel.out };
       if (resize.scale <= 0.1251) {
+        // If the scale is less than 0.125, we need to disable fastShrinkOnLoad to prevent edge artifacts for topo raster map
         sharp.resize(resize.width, resize.height, { ...resizeOptions, fastShrinkOnLoad: false });
       } else {
         sharp.resize(resize.width, resize.height, resizeOptions);