diff --git a/umap/static/umap/base.css b/umap/static/umap/base.css
index 748128da..145def77 100644
--- a/umap/static/umap/base.css
+++ b/umap/static/umap/base.css
@@ -762,7 +762,7 @@ input:invalid {
     color: #eeeeec;
     font-size: 0.8em;
     border-radius: 2px;
-    z-index: 1004;
+    z-index: 1011;
     font-weight: normal;
     max-width: 300px;
 }