diff --git a/src/browser/app/profile/zen-browser.js b/src/browser/app/profile/zen-browser.js
index e87871597..3061f9296 100644
--- a/src/browser/app/profile/zen-browser.js
+++ b/src/browser/app/profile/zen-browser.js
@@ -74,6 +74,8 @@ pref('zen.view.sidebar-expanded.on-hover', false);
 pref('zen.view.sidebar-expanded.show-button', true);
 pref('zen.view.sidebar-expanded.max-width', 400);
 
+pref('zen.view.sidebar-collapsed.hide-mute-button', true);
+
 pref('zen.keyboard.shortcuts.enabled', true);
 pref('zen.keyboard.shortcuts', ""); // Empty string means default shortcuts
 pref('zen.keyboard.shortcuts.disable-firefox', false);
diff --git a/src/browser/base/content/zen-styles/zen-tabs/vertical-tabs.css b/src/browser/base/content/zen-styles/zen-tabs/vertical-tabs.css
index 012cda7e1..e7be41026 100644
--- a/src/browser/base/content/zen-styles/zen-tabs/vertical-tabs.css
+++ b/src/browser/base/content/zen-styles/zen-tabs/vertical-tabs.css
@@ -235,6 +235,12 @@
     display: none; /* TODO: fix this */
   }
 
+  @media (-moz-bool-pref: "zen.view.sidebar-collapsed.hide-mute-button") and (not (-moz-bool-pref: "zen.view.sidebar-expanded")) {
+    .tab-icon-overlay:is([soundplaying], [muted]):not([selected]) {
+      display: none;
+    }
+  }
+  
   @media (-moz-bool-pref: "zen.view.sidebar-expanded") {  
     #navigator-toolbox:is([zen-user-hover="true"]:hover, :not([zen-user-hover="true"])) {
       & #navigator-toolbox {