--- a/browser/themes/shared/incontentprefs/privacy.css
+++ b/browser/themes/shared/incontentprefs/privacy.css
@@ -1,15 +1,15 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
  * You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 .permission-icon {
-  max-height: 20px;
-  max-width: 20px;
+  height: 20px;
+  width: 20px;
   vertical-align: middle;
   -moz-context-properties: fill;
   fill: currentColor;
 }
 
 .geo-icon {
   list-style-image: url(chrome://browser/skin/notification-icons/geo.svg);
 }