diff --git a/src/other/firefox/chrome/WhiteSur/parts/headerbar-private-urlbar.css b/src/other/firefox/chrome/WhiteSur/parts/headerbar-private-urlbar.css
index ae9c0e1..caedecd 100644
--- a/src/other/firefox/chrome/WhiteSur/parts/headerbar-private-urlbar.css
+++ b/src/other/firefox/chrome/WhiteSur/parts/headerbar-private-urlbar.css
@@ -14,9 +14,26 @@
 	opacity: 0.3;
 	transform: translate(15px, 0);
 }
+
 :root[privatebrowsingmode="temporary"] #nav-bar toolbarspring:first-of-type:-moz-lwtheme-brighttext:before {
 	background-image: url("../icons/user-not-tracked-dark.svg");
 }
+
+@media (prefers-color-scheme: dark) {
+	:root[privatebrowsingmode="temporary"] #nav-bar toolbarspring:first-of-type:before {
+		background: url("../icons/user-not-tracked-dark.svg") no-repeat;
+		background-size: contain;
+		content: "";
+		display: block;
+		position: absolute;
+		width: 32px;
+		height: 32px;
+		top: 8px;
+		opacity: 0.3;
+		transform: translate(15px, 0);
+	}
+}
+
 :root[privatebrowsingmode="temporary"] #nav-bar {
 	overflow: hidden;
 }