diff --git a/umap/static/umap/map.css b/umap/static/umap/map.css
index b3a6141b..4c14bfc6 100644
--- a/umap/static/umap/map.css
+++ b/umap/static/umap/map.css
@@ -171,6 +171,7 @@
 .leaflet-iconLayers-layerTitleContainer {
     display: none;
     left: 0;
+    overflow: hidden;
 }
 .leaflet-iconLayers-layerTitle {
     text-align: center;