--- a/browser/themes/shared/tabs.inc.css
+++ b/browser/themes/shared/tabs.inc.css
@@ -148,37 +148,37 @@
 .tab-icon-sound {
   margin-inline-start: 4px;
   width: 16px;
   height: 16px;
   padding: 0;
 }
 
 .tab-icon-sound[soundplaying] {
-  list-style-image: url("chrome://browser/skin/tabbrowser/tab-audio.svg#tab-audio-backgroundTab");
+  list-style-image: url("chrome://browser/skin/tabbrowser/tab-audio.svg#tab-audio");
 }
 
 .tab-icon-sound[soundplaying]:hover {
-  list-style-image: url("chrome://browser/skin/tabbrowser/tab-audio.svg#tab-audio-backgroundTab-hover");
+  list-style-image: url("chrome://browser/skin/tabbrowser/tab-audio.svg#tab-audio-hover");
 }
 
 .tab-icon-sound[soundplaying]:hover:active {
-  list-style-image: url("chrome://browser/skin/tabbrowser/tab-audio.svg#tab-audio-backgroundTab-pressed");
+  list-style-image: url("chrome://browser/skin/tabbrowser/tab-audio.svg#tab-audio-pressed");
 }
 
 .tab-icon-sound[muted] {
-  list-style-image: url("chrome://browser/skin/tabbrowser/tab-audio.svg#tab-audio-backgroundTab-muted");
+  list-style-image: url("chrome://browser/skin/tabbrowser/tab-audio.svg#tab-audio-muted");
 }
 
 .tab-icon-sound[muted]:hover {
-  list-style-image: url("chrome://browser/skin/tabbrowser/tab-audio.svg#tab-audio-backgroundTab-muted-hover");
+  list-style-image: url("chrome://browser/skin/tabbrowser/tab-audio.svg#tab-audio-muted-hover");
 }
 
 .tab-icon-sound[muted]:hover:active {
-  list-style-image: url("chrome://browser/skin/tabbrowser/tab-audio.svg#tab-audio-backgroundTab-muted-pressed");
+  list-style-image: url("chrome://browser/skin/tabbrowser/tab-audio.svg#tab-audio-muted-pressed");
 }
 
 .tab-icon-sound[visuallyselected=true][soundplaying] {
   list-style-image: url("chrome://browser/skin/tabbrowser/tab-audio.svg#tab-audio");
 }
 
 .tab-icon-sound[visuallyselected=true][soundplaying]:hover {
   list-style-image: url("chrome://browser/skin/tabbrowser/tab-audio.svg#tab-audio-hover");