diff --git a/browser/themes/windows/browser.css b/browser/themes/windows/browser.css
index 7f6d91dad0e0..740e0a6ab9ca 100644
--- a/browser/themes/windows/browser.css
+++ b/browser/themes/windows/browser.css
@@ -822,7 +822,7 @@ toolbar[brighttext] .toolbarbutton-1 > .toolbarbutton-menubutton-dropmarker {
 
 #nav-bar .toolbarbutton-1[type=panel] > .toolbarbutton-icon,
 #nav-bar .toolbarbutton-1[type=panel] > .toolbarbutton-badge-stack,
-#nav-bar .toolbarbutton-1[type=menu]:not(#PanelUI-menu-button):not(#back-button):not(#forward-button) > .toolbarbutton-icon,
+#nav-bar .toolbarbutton-1[type=menu]:not(#PanelUI-menu-button):not(#back-button):not(#forward-button):not(#new-tab-button) > .toolbarbutton-icon,
 #nav-bar .toolbarbutton-1[type=menu]:not(#PanelUI-menu-button) > .toolbarbutton-badge-stack,
 #nav-bar .toolbarbutton-1[type=menu] > .toolbarbutton-text /* hack for add-ons that forcefully display the label */ {
   padding-inline-end: 17px;