diff --git a/src/element.rs b/src/element.rs
index 4124479..7675653 100644
--- a/src/element.rs
+++ b/src/element.rs
@@ -92,6 +92,7 @@ impl PartialEq<Node> for ScanNode {
 fn filter_whitespace_nodes(nodes: Vec<Node>) -> Vec<Node> {
 	// Tags with mixed significant text and children tags aren't valid in XMPP, so we know we
 	// can remove these before comparing.
+	// XXX: ^^^^^ This isn't true.
 	let filter_nodes = |(prev_type, mut acc): (Option<NodeType>, Vec<Node>), node| {
 		let type_ = match node {
 			Node::Text(_) => NodeType::Text,