diff --git a/components/style/gecko/non_ts_pseudo_class_list.rs b/components/style/gecko/non_ts_pseudo_class_list.rs
index fabac104ad8..54e2e97a4d4 100644
--- a/components/style/gecko/non_ts_pseudo_class_list.rs
+++ b/components/style/gecko/non_ts_pseudo_class_list.rs
@@ -53,7 +53,7 @@ macro_rules! apply_non_ts_list {
                 ("-moz-devtools-highlighted", MozDevtoolsHighlighted, DEVTOOLS_HIGHLIGHTED, PSEUDO_CLASS_ENABLED_IN_UA_SHEETS),
                 ("-moz-styleeditor-transitioning", MozStyleeditorTransitioning, STYLEEDITOR_TRANSITIONING, PSEUDO_CLASS_ENABLED_IN_UA_SHEETS),
                 ("fullscreen", Fullscreen, FULLSCREEN, _),
-                ("-moz-modal-dialog", MozModalDialog, MODAL_DIALOG, PSEUDO_CLASS_ENABLED_IN_UA_SHEETS),
+                ("modal", Modal, MODAL_DIALOG, _),
                 ("-moz-topmost-modal", MozTopmostModal, TOPMOST_MODAL, PSEUDO_CLASS_ENABLED_IN_UA_SHEETS),
                 ("-moz-broken", MozBroken, BROKEN, _),
                 ("-moz-loading", MozLoading, LOADING, _),
diff --git a/components/style/gecko/wrapper.rs b/components/style/gecko/wrapper.rs
index b1c217339fe..19ee84fbc83 100644
--- a/components/style/gecko/wrapper.rs
+++ b/components/style/gecko/wrapper.rs
@@ -2005,7 +2005,7 @@ impl<'le> ::selectors::Element for GeckoElement<'le> {
             NonTSPseudoClass::MozDirAttrLTR |
             NonTSPseudoClass::MozDirAttrRTL |
             NonTSPseudoClass::MozDirAttrLikeAuto |
-            NonTSPseudoClass::MozModalDialog |
+            NonTSPseudoClass::Modal |
             NonTSPseudoClass::MozTopmostModal |
             NonTSPseudoClass::Active |
             NonTSPseudoClass::Hover |