diff --git a/browser/base/content/browser.xul b/browser/base/content/browser.xul
index 5977b72e326..38b92c3fe22 100644
--- a/browser/base/content/browser.xul
+++ b/browser/base/content/browser.xul
@@ -507,9 +507,6 @@
 #ifdef WINCE
            defaulticonsize="small" iconsize="small"
 #endif
-#ifdef XP_WIN
-           tabsontop="true"
-#endif
 #ifdef XP_WIN
            tabsontop="true"
 #endif