diff --git a/htdocs/css/map.css b/htdocs/css/map.css
index e78f198..796f442 100644
--- a/htdocs/css/map.css
+++ b/htdocs/css/map.css
@@ -31,6 +31,7 @@ ul {
     background-color: #fff;
     padding: 10px;
     margin: 10px;
+    user-select: none;
 }
 
 /* show it as soon as google maps has moved it to its container */