diff --git a/plugins/tiddlywiki/codemirror-autocomplete/files/addon/hint/show-hint.css b/plugins/tiddlywiki/codemirror-autocomplete/files/addon/hint/show-hint.css
index 5617ccca2..91d74dfc9 100644
--- a/plugins/tiddlywiki/codemirror-autocomplete/files/addon/hint/show-hint.css
+++ b/plugins/tiddlywiki/codemirror-autocomplete/files/addon/hint/show-hint.css
@@ -1,6 +1,6 @@
 .CodeMirror-hints {
   position: absolute;
-  z-index: 10;
+  z-index: 999;
   overflow: hidden;
   list-style: none;