diff --git a/packages/astro/src/assets/utils/vendor/image-size/types/jpg.ts b/packages/astro/src/assets/utils/vendor/image-size/types/jpg.ts
index 11a1e0b43d3a..763cfc98c096 100644
--- a/packages/astro/src/assets/utils/vendor/image-size/types/jpg.ts
+++ b/packages/astro/src/assets/utils/vendor/image-size/types/jpg.ts
@@ -122,6 +122,7 @@ export const JPG: IImage = {
 
       // Every JPEG block must begin with a 0xFF
       if (input[i] !== 0xff) {
+        // Change from upstream: fix non-0xFF blocks skipping
         input = input.slice(i)
         continue
       }