diff --git a/src/modules/thumbs/thumbs.mjs b/src/modules/thumbs/thumbs.mjs
index f1d1accee..f67a23d99 100644
--- a/src/modules/thumbs/thumbs.mjs
+++ b/src/modules/thumbs/thumbs.mjs
@@ -153,7 +153,7 @@ export default function Thumb({ swiper, extendParams, on }) {
           newThumbsIndex > currentThumbsIndex &&
           thumbsSwiper.params.slidesPerGroup === 1
         ) {
-          // newThumbsIndex = newThumbsIndex - slidesPerView + 1;
+          newThumbsIndex = newThumbsIndex - slidesPerView + 1;
         }
         thumbsSwiper.slideTo(newThumbsIndex, initial ? 0 : undefined);
       }