diff --git a/accessible/xul/XULFormControlAccessible.cpp b/accessible/xul/XULFormControlAccessible.cpp
index ca9039c5ff2..d52ce232164 100644
--- a/accessible/xul/XULFormControlAccessible.cpp
+++ b/accessible/xul/XULFormControlAccessible.cpp
@@ -226,7 +226,6 @@ XULDropmarkerAccessible::DropmarkerOpen(bool aToggleOpen) const
 
   nsIContent* parent = mContent->GetFlattenedTreeParent();
 
-  bool foundRightElement = false;
   while (parent) {
     nsCOMPtr<nsIDOMXULButtonElement> parentButtonElement =
       do_QueryInterface(parent);