diff --git a/src/components/sidebarTableOfContents/style.module.scss b/src/components/sidebarTableOfContents/style.module.scss
index e50a40cd94cd1..c8e9edaeb9c1a 100644
--- a/src/components/sidebarTableOfContents/style.module.scss
+++ b/src/components/sidebarTableOfContents/style.module.scss
@@ -18,6 +18,10 @@
     position: relative;
     line-height: 1.5;
     display: block;
+    text-overflow: ellipsis;
+    overflow: hidden;
+    white-space: nowrap;
+
     color: var(--link-color);
     padding: 0.25em 0;
     opacity: 0.8;