diff --git a/style/properties/longhands/svg.mako.rs b/style/properties/longhands/svg.mako.rs
index 300a8667f8..9a75124d21 100644
--- a/style/properties/longhands/svg.mako.rs
+++ b/style/properties/longhands/svg.mako.rs
@@ -84,7 +84,7 @@ ${helpers.predefined_type(
     "clip-path",
     "basic_shape::ClipPath",
     "generics::basic_shape::ClipPath::None",
-    engines="gecko",
+    engines="gecko servo",
     extra_prefixes="webkit",
     animation_value_type="basic_shape::ClipPath",
     spec="https://drafts.fxtf.org/css-masking-1/#propdef-clip-path",
diff --git a/style/properties/properties.mako.rs b/style/properties/properties.mako.rs
index 59ade9caaf..6305caf442 100644
--- a/style/properties/properties.mako.rs
+++ b/style/properties/properties.mako.rs
@@ -2935,7 +2935,7 @@ macro_rules! longhand_properties_idents {
 }
 
 // Large pages generate tens of thousands of ComputedValues.
-size_of_test!(ComputedValues, 200);
+size_of_test!(ComputedValues, 208);
 // FFI relies on this.
 size_of_test!(Option<Arc<ComputedValues>>, 8);
 
diff --git a/style_static_prefs/src/lib.rs b/style_static_prefs/src/lib.rs
index 254bed3035..e5fcec1119 100644
--- a/style_static_prefs/src/lib.rs
+++ b/style_static_prefs/src/lib.rs
@@ -18,6 +18,12 @@ macro_rules! pref {
     ("layout.css.system-ui.enabled") => {
         true
     };
+    ("layout.css.basic-shape-rect.enabled") => {
+        true
+    };
+    ("layout.css.basic-shape-xywh.enabled") => {
+        true
+    };
     ($string:literal) => {
         false
     };