diff --git a/src/vs/workbench/contrib/extensions/browser/media/extensionEditor.css b/src/vs/workbench/contrib/extensions/browser/media/extensionEditor.css
index 33f3b350805..5a8be901f33 100644
--- a/src/vs/workbench/contrib/extensions/browser/media/extensionEditor.css
+++ b/src/vs/workbench/contrib/extensions/browser/media/extensionEditor.css
@@ -368,10 +368,6 @@
 	line-height: 22px;
 }
 
-.extension-editor > .body > .content details > summary::-webkit-details-marker {
-	color: rgba(128, 128, 128, 0.5);
-}
-
 .extension-editor > .body > .content table tr:nth-child(odd) {
 	background-color: rgba(130, 130, 130, 0.04);
 }