diff --git a/src/app/ui/TreeView.js b/src/app/ui/TreeView.js
index 7601a707f3..8396a37854 100644
--- a/src/app/ui/TreeView.js
+++ b/src/app/ui/TreeView.js
@@ -21,6 +21,7 @@ var css = csjs`
   }
   .caret_tv {
     width: 10px;
+    flex-shrink: 0;
   }
   .label_tv {
     display: flex;