diff --git a/public/libs/editor/editor.css b/public/libs/editor/editor.css
index c9a034f5b9..42f6f5ed76 100644
--- a/public/libs/editor/editor.css
+++ b/public/libs/editor/editor.css
@@ -407,7 +407,7 @@ div.CodeMirror span.CodeMirror-nonmatchingbracket {color: #f22;}
   top: 0;
   left: 100%;
   background: #f9f9f5;
-  z-index: 9999;
+  z-index: 1000;
   overflow: auto;
   -webkit-transition: left 0.2s ease;
   -moz-transition: left 0.2s ease;