diff --git a/aio/src/styles/2-modules/_heading-anchors.scss b/aio/src/styles/2-modules/_heading-anchors.scss
index a59e52d8b6..d6c1508c2c 100644
--- a/aio/src/styles/2-modules/_heading-anchors.scss
+++ b/aio/src/styles/2-modules/_heading-anchors.scss
@@ -12,6 +12,7 @@
       margin-left: -42px;
       padding: 0 8px;
       text-decoration: none;
+      user-select: none;
       vertical-align: middle;
       visibility: hidden;
       width: 40px;