diff --git a/app/assets/stylesheets/common/components/topic-map.scss b/app/assets/stylesheets/common/components/topic-map.scss
index 81a34a46cfe..e758f463d03 100644
--- a/app/assets/stylesheets/common/components/topic-map.scss
+++ b/app/assets/stylesheets/common/components/topic-map.scss
@@ -312,6 +312,7 @@ body:not(.archetype-private_message) {
       margin: 0;
       padding: 0;
       list-style-type: none;
+      max-height: 80dvh;
     }
   }