diff --git a/src/components/Gallery.astro b/src/components/Gallery.astro
index 6728526..83a8ef0 100644
--- a/src/components/Gallery.astro
+++ b/src/components/Gallery.astro
@@ -41,7 +41,7 @@ const imageMetadataToReactImageProps = async (
 
   const thumbnailAstroImageProps = {
     ...astroImageProps,
-    ...IMAGE_SIZES.FIXED.MDX_XXS_16_9,
+    ...IMAGE_SIZES.FIXED.MDX_XS_16_9,
     alt: 'Thumbnail image',
   };