diff --git a/browser/themes/windows/browser.css b/browser/themes/windows/browser.css
index 2cb1a094bc42d045992bf42ccd4c79e89795d971..c2fab339d4ddb7dd394d73f686c1b6e569d2a1be 100644
--- a/browser/themes/windows/browser.css
+++ b/browser/themes/windows/browser.css
@@ -4,6 +4,8 @@
 
 @namespace html url("http://www.w3.org/1999/xhtml");
 
+%include ../custom/windows/windows.inc.css
+
 %include ../shared/browser.inc.css
 %include ../shared/browser-custom-colors.inc.css
 %filter substitution