diff --git a/src/components/script/dom/htmldatalistelement.rs b/src/components/script/dom/htmldatalistelement.rs
index 6cd888029c2..ef3f91f1702 100644
--- a/src/components/script/dom/htmldatalistelement.rs
+++ b/src/components/script/dom/htmldatalistelement.rs
@@ -42,6 +42,7 @@ impl HTMLDataListElement {
 
 impl HTMLDataListElement {
     pub fn Options(&self) -> JS<HTMLCollection> {
+        // FIXME: https://github.com/mozilla/servo/issues/1842
         let doc = self.htmlelement.element.node.owner_doc();
         let doc = doc.get();
         HTMLCollection::new(&doc.window, ~[])
diff --git a/src/components/script/dom/htmlfieldsetelement.rs b/src/components/script/dom/htmlfieldsetelement.rs
index cdfc6eab402..4dec639d041 100644
--- a/src/components/script/dom/htmlfieldsetelement.rs
+++ b/src/components/script/dom/htmlfieldsetelement.rs
@@ -69,6 +69,7 @@ impl HTMLFieldSetElement {
     }
 
     pub fn Elements(&self) -> JS<HTMLCollection> {
+        // FIXME: https://github.com/mozilla/servo/issues/1843
         let doc = self.htmlelement.element.node.owner_doc();
         let doc = doc.get();
         HTMLCollection::new(&doc.window, ~[])
diff --git a/src/components/script/dom/htmlformelement.rs b/src/components/script/dom/htmlformelement.rs
index 03d2ee8eeb1..a1ca7d5dc2f 100644
--- a/src/components/script/dom/htmlformelement.rs
+++ b/src/components/script/dom/htmlformelement.rs
@@ -115,6 +115,7 @@ impl HTMLFormElement {
     }
 
     pub fn Elements(&self) -> JS<HTMLCollection> {
+        // FIXME: https://github.com/mozilla/servo/issues/1844
         let doc = self.htmlelement.element.node.owner_doc();
         let doc = doc.get();
         HTMLCollection::new(&doc.window, ~[])
diff --git a/src/components/script/dom/htmlmapelement.rs b/src/components/script/dom/htmlmapelement.rs
index 41516e9a5d2..d343073a278 100644
--- a/src/components/script/dom/htmlmapelement.rs
+++ b/src/components/script/dom/htmlmapelement.rs
@@ -51,6 +51,7 @@ impl HTMLMapElement {
     }
 
     pub fn Areas(&self) -> JS<HTMLCollection> {
+        // FIXME: https://github.com/mozilla/servo/issues/1845
         let doc = self.htmlelement.element.node.owner_doc();
         let doc = doc.get();
         HTMLCollection::new(&doc.window, ~[])