diff --git a/components/style/gecko/non_ts_pseudo_class_list.rs b/components/style/gecko/non_ts_pseudo_class_list.rs
index 6e1bc857111..6aa26887d12 100644
--- a/components/style/gecko/non_ts_pseudo_class_list.rs
+++ b/components/style/gecko/non_ts_pseudo_class_list.rs
@@ -119,9 +119,6 @@ macro_rules! apply_non_ts_list {
             string: [
                 // FIXME(emilio): Unship this for content docs (bug 1396066).
                 ("-moz-system-metric", MozSystemMetric, mozSystemMetric, _, _),
-                // FIXME(emilio): Unship this for content docs (bug 1396073).
-                ("-moz-empty-except-children-with-localname", MozEmptyExceptChildrenWithLocalname,
-                 mozEmptyExceptChildrenWithLocalname, _, _),
                 ("lang", Lang, lang, _, _),
             ],
             keyword: [
diff --git a/components/style/gecko/wrapper.rs b/components/style/gecko/wrapper.rs
index f7248342e80..f9f4b69e6ee 100644
--- a/components/style/gecko/wrapper.rs
+++ b/components/style/gecko/wrapper.rs
@@ -1970,7 +1970,6 @@ impl<'le> ::selectors::Element for GeckoElement<'le> {
             }
             NonTSPseudoClass::MozSystemMetric(ref s) |
             NonTSPseudoClass::MozLocaleDir(ref s) |
-            NonTSPseudoClass::MozEmptyExceptChildrenWithLocalname(ref s) |
             NonTSPseudoClass::Dir(ref s) => {
                 unsafe {
                     let mut set_slow_selector = false;