diff --git a/components/style/properties/shorthands/text.mako.rs b/components/style/properties/shorthands/text.mako.rs
index 5e71fc08cf3..3f892affdf5 100644
--- a/components/style/properties/shorthands/text.mako.rs
+++ b/components/style/properties/shorthands/text.mako.rs
@@ -88,6 +88,7 @@
                 has_value = true;
             }
 
+            % if engine == "gecko":
             if !is_auto_thickness {
                 if has_value {
                     dest.write_str(" ")?;
@@ -95,7 +96,6 @@
                 self.text_decoration_thickness.to_css(dest)?;
             }
 
-            % if engine == "gecko":
             if !is_solid_style {
                 if has_value {
                     dest.write_str(" ")?;