diff --git a/stylesheets/_conversation.scss b/stylesheets/_conversation.scss
index 9195bff82..f19697942 100644
--- a/stylesheets/_conversation.scss
+++ b/stylesheets/_conversation.scss
@@ -426,6 +426,7 @@
 }
 
 .module-scroll-down {
+  z-index: 100;
   position: absolute;
   right: 20px;
   bottom: 10px;