diff --git a/scripts/pi-hole/js/footer.js b/scripts/pi-hole/js/footer.js
index f04c6c70..b7536404 100644
--- a/scripts/pi-hole/js/footer.js
+++ b/scripts/pi-hole/js/footer.js
@@ -546,7 +546,7 @@ function initSettingsLevel() {
   }
 
   // Set the settings level
-  $("#settings-level").val("" + settingsLevel);
+  $("#settings-level").val(String(settingsLevel));
   applySettingsLevel();
 }
 
diff --git a/settings-api.lp b/settings-api.lp
index 91eb0d2e..c195f1b3 100644
--- a/settings-api.lp
+++ b/settings-api.lp
@@ -140,13 +140,13 @@ mg.include('scripts/pi-hole/lua/header_authenticated.lp','r')
                             <thead>
                                 <tr>
                                     <td></td>
-                                    <th>ID</th>
-                                    <th>Valid</th>
+                                    <th title="Session ID used internally by our Pi-hole">ID</th>
+                                    <th title="Session is still valid (neither expired nor closed)">Valid</th>
                                     <th title="Connection between client and Pi-hole is end-to-end encrypted">TLS</th>
-                                    <th>Login at</th>
-                                    <th>Valid until</th>
-                                    <th>Client IP</th>
-                                    <th>User Agent</th>
+                                    <th title="Time at which the client created the session">Login at</th>
+                                    <th title="Time at which the session expires (if not prolonged)">Valid until</th>
+                                    <th title="The client that created this session (the current connection is highlighted in bold-face)">Client IP</th>
+                                    <th title="User agent of the client to ease client identifiability (if available)">User Agent</th>
                                     <td></td>
                                 </tr>
                             </thead>