diff --git a/components/style/properties/data.py b/components/style/properties/data.py
index 324879dbcfb..26cc7851c0e 100644
--- a/components/style/properties/data.py
+++ b/components/style/properties/data.py
@@ -445,7 +445,6 @@ class Longhand(Property):
                 "FontSizeAdjust",
                 "FontStretch",
                 "FontStyle",
-                "FontStyleAdjust",
                 "FontSynthesis",
                 "FontVariantEastAsian",
                 "FontVariantLigatures",