diff --git a/css/style.css b/css/style.css
index 80a7032..bd617aa 100644
--- a/css/style.css
+++ b/css/style.css
@@ -460,6 +460,15 @@ button {
 
 #retry-btn:hover { opacity: .9; }
 
+/* ===== Copyright footer ===== */
+.copyright {
+  text-align: center;
+  font-size: 0.6875rem;
+  color: var(--text-muted);
+  padding: 1.5rem 1rem 2rem;
+  opacity: .6;
+}
+
 /* ===== Accessibility ===== */
 .sr-only {
   position: absolute;
diff --git a/index.html b/index.html
index 7cb3f59..2f79e91 100644
--- a/index.html
+++ b/index.html
@@ -74,6 +74,8 @@
   </div>
 </div>
 
+<footer class="copyright">Vragen &copy; PeopleCert International Ltd. Uitsluitend voor persoonlijk studiegebruik.</footer>
+
 <script src="data/questions-nl.js"></script>
 <script src="data/questions-en.js"></script>
 <script src="js/quiz.js"></script>