diff --git a/accessible/src/base/nsAccessNode.h b/accessible/src/base/nsAccessNode.h
index 585c7d8dd17..b58ff1d2f7a 100644
--- a/accessible/src/base/nsAccessNode.h
+++ b/accessible/src/base/nsAccessNode.h
@@ -214,6 +214,10 @@ protected:
     static bool gIsFormFillEnabled;
 
 private:
+  nsAccessNode();
+  nsAccessNode(const nsAccessNode&);
+  nsAccessNode& operator =(const nsAccessNode&);
+  
   static nsApplicationAccessible *gApplicationAccessible;
 };