diff --git a/web/styles/zulip.css b/web/styles/zulip.css
index 61ad5b37c0..90211d456f 100644
--- a/web/styles/zulip.css
+++ b/web/styles/zulip.css
@@ -1172,6 +1172,8 @@ td.pointer {
             .message_label_clickable.narrows_by_topic {
                 position: relative;
                 top: 0.5px;
+                overflow: hidden;
+                text-overflow: ellipsis;
             }
         }