diff --git a/webgis/index.html b/webgis/index.html
index 4c10106..7adf5cb 100644
--- a/webgis/index.html
+++ b/webgis/index.html
@@ -793,7 +793,7 @@
         <button class="modal-close is-large" aria-label="close" data-action="modal#close tabs#reset"></button>
     </div>
     <!-- Prehistoric modal -->
-    <div class="modal" id="prehist-data" data-controller="modal biblio marker" data-modal-target="modal">
+    <div class="modal" id="prehist-data" data-controller="modal biblio marker tabs" data-modal-target="modal">
         <div class="modal-background" data-action="click->modal#close click->tabs#reset"></div>
         <div class="modal-content has-background-white">
             <div class="tabs is-centered">