diff --git a/Documentation/rbtree.txt b/Documentation/rbtree.txt
index 7224459b..7710214 100644
--- a/Documentation/rbtree.txt
+++ b/Documentation/rbtree.txt
@@ -131,8 +131,8 @@
   	}
 
   	/* Add new node and rebalance tree. */
-  	rb_link_node(data->node, parent, new);
-  	rb_insert_color(data->node, root);
+  	rb_link_node(&data->node, parent, new);
+  	rb_insert_color(&data->node, root);
 
 	return TRUE;
   }
@@ -146,10 +146,10 @@
 
 Example:
 
-  struct mytype *data = mysearch(mytree, "walrus");
+  struct mytype *data = mysearch(&mytree, "walrus");
 
   if (data) {
-  	rb_erase(data->node, mytree);
+  	rb_erase(&data->node, &mytree);
   	myfree(data);
   }