diff --git a/wp-admin/css/colors-classic.css b/wp-admin/css/colors-classic.css
index 4251f15d6a..53da91a25d 100644
--- a/wp-admin/css/colors-classic.css
+++ b/wp-admin/css/colors-classic.css
@@ -8,7 +8,7 @@ body	{
 }
 
 body > #upload-menu {
-	border-bottom-style: #fff;
+	border-bottom-color: #fff;
 }
 
 div#current-widgets, #postcustomstuff table, #your-profile fieldset, a.page-numbers, #rightnow, div.dashboard-widget, .widefat {
diff --git a/wp-admin/css/colors-fresh.css b/wp-admin/css/colors-fresh.css
index 823ba4605b..f1bc2cdb65 100644
--- a/wp-admin/css/colors-fresh.css
+++ b/wp-admin/css/colors-fresh.css
@@ -8,7 +8,7 @@ body	{
 }
 
 body > #upload-menu {
-	border-bottom-style: #fff;
+	border-bottom-color: #fff;
 }
 
 div#current-widgets, #postcustomstuff table, #your-profile fieldset, a.page-numbers, #rightnow, div.dashboard-widget, .widefat {