diff --git a/js/carousel.js b/js/carousel.js
index 56aa8eb917..bda09543fa 100644
--- a/js/carousel.js
+++ b/js/carousel.js
@@ -194,7 +194,7 @@
 
     Plugin.call($target, options)
 
-    if (slideIndex = $this.attr('data-slide-to')) {
+    if (slideIndex) {
       $target.data('bs.carousel').to(slideIndex)
     }