diff --git a/lib/editor/tiny/styles.css b/lib/editor/tiny/styles.css
index bbca493c270..0f4058e1ebe 100644
--- a/lib/editor/tiny/styles.css
+++ b/lib/editor/tiny/styles.css
@@ -1,7 +1,3 @@
-.jsenabled .tox-tinymce-aux {
-    z-index: 1000;
-}
-
 .jsenabled .tox-shadowhost.tox-fullscreen,
 .jsenabled .tox.tox-tinymce.tox-fullscreen {
     z-index: 1050;