diff --git a/browser/base/skin/browser.css b/browser/base/skin/browser.css
index cad6d8c11dfc..26413eba312f 100644
--- a/browser/base/skin/browser.css
+++ b/browser/base/skin/browser.css
@@ -737,4 +737,7 @@ toolbar[mode="text"] > #window-controls > toolbarbutton > .toolbarbutton-text {
    display: none;
 }
 
-
+resizer[dir="bottomright"] {
+  -moz-appearance: resizer;
+  cursor: se-resize;
+}