--- a/browser/themes/shared/incontentprefs/preferences.inc.css
+++ b/browser/themes/shared/incontentprefs/preferences.inc.css
@@ -695,27 +695,28 @@ groupbox {
 }
 
 .search-tooltip-parent {
   position: relative;
 }
 
 menulist[indicator=true] > menupopup menuitem:not([image]) > .menu-iconic-left {
   display: -moz-box;
+  min-width: auto; /* Override the min-width defined in menu.css */
+  margin-inline-end: 6px;
+}
+
+menulist[indicator=true] > menupopup menuitem:not([image]) > .menu-iconic-left > .menu-iconic-icon {
   width: 8px;
-  min-width: auto; /* Override the min-width defined in menu.css */
   height: 10px;
-  margin-inline-end: 6px;
+  margin: 0;
 }
 
 menulist[indicator=true] > menupopup menuitem[indicator=true]:not([image]) > .menu-iconic-left > .menu-iconic-icon {
   list-style-image: url(chrome://browser/skin/preferences/in-content-new/search-arrow-indicator.svg);
-  width: 8px;
-  height: 10px;
-  margin: 0;
 }
 
 menulist[indicator=true] > menupopup menuitem[indicator=true]:not([image]) > .menu-iconic-left > .menu-iconic-icon:-moz-locale-dir(rtl) {
   transform: scaleX(-1);
 }
 
 .menu-iconic-highlightable-text {
   margin: 0; /* Align with the margin of xul:label.menu-iconic-text */