diff --git a/website/web/static/tree.js b/website/web/static/tree.js
index 34076908..9b5798d2 100644
--- a/website/web/static/tree.js
+++ b/website/web/static/tree.js
@@ -160,7 +160,7 @@ function UnbookmarkAllNodes() {
         .on('mouseout', (event, d) => d3.select('#tooltip').style('opacity', 0));
 };
 
-function MarkAsLegitimate(capture_uuid, hostnode_uuid=null, urlnode_uuid=null) {
+function MarkAsKnown(capture_uuid, hostnode_uuid=null, urlnode_uuid=null) {
   let data = {};
   if (hostnode_uuid != null) { data['hostnode_uuid'] = hostnode_uuid; };
   if (urlnode_uuid != null) { data['urlnode_uuid'] = urlnode_uuid; };
@@ -545,7 +545,7 @@ function update(root, computed_node_width=0) {
                                 .style('opacity', 1)
                                 .style('left', `${event.pageX + 10}px`)
                                 .style('top', `${event.pageY + 10}px`)
-                                .text('This node has only legitimate content');
+                                .text('This node has only known content');
                         })
                         .on('mouseout', (event, d) => d3.select('#tooltip').style('opacity', 0));
               } else if (d.data.all_empty) {
diff --git a/website/web/templates/tree.html b/website/web/templates/tree.html
index ac723475..f8e6e653 100644
--- a/website/web/templates/tree.html
+++ b/website/web/templates/tree.html
@@ -134,7 +134,7 @@
         </li>
         {% if enable_context_by_users %}
         <li>
-          <a href="#/" role="button" onclick="MarkAsLegitimate('{{ tree_uuid }}');">Mark capture as legitimate</a>
+          <a href="#/" role="button" onclick="MarkAsKnown('{{ tree_uuid }}');">Mark all the captures' entries as known</a>
         </li>
         {% endif %}
         {% if enable_mail_notification %}
@@ -161,7 +161,7 @@
     </center>
   <hr/>
   <img src="{{ url_for('static', filename='check.svg') }}"
-       alt="Legitimate Node" height="20" width="20"> Legit node<br>
+       alt="Known Node" height="20" width="20"> Known node<br>
 
   <img src="{{ url_for('static', filename='bomb.svg') }}"
        alt="Malicious Node" height="20" width="20"> Malicious node<br>