diff --git a/umap/static/umap/css/dialog.css b/umap/static/umap/css/dialog.css
index 328c1ac2..b58015e8 100644
--- a/umap/static/umap/css/dialog.css
+++ b/umap/static/umap/css/dialog.css
@@ -2,7 +2,7 @@
     z-index: 10001;
     margin: auto;
     margin-top: 100px;
-    width: 50vw;
+    width: 40vw;
     max-width: 100vw;
     max-height: 50vh;
     padding: 20px;