diff --git a/components/style/properties/longhands/text.mako.rs b/components/style/properties/longhands/text.mako.rs
index daa5fcfd8ed..30471821b9b 100644
--- a/components/style/properties/longhands/text.mako.rs
+++ b/components/style/properties/longhands/text.mako.rs
@@ -45,6 +45,7 @@ ${helpers.single_keyword(
     "text-decoration-style",
     "solid double dotted dashed wavy -moz-none",
     engines="gecko servo",
+    gecko_enum_prefix="StyleTextDecorationStyle",
     animation_value_type="discrete",
     spec="https://drafts.csswg.org/css-text-decor/#propdef-text-decoration-style",
 )}