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-rw-r--r--components/style/servo/selector_parser.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/components/style/servo/selector_parser.rs b/components/style/servo/selector_parser.rs
index af4dd92fcf7..a3a3ca7c2b8 100644
--- a/components/style/servo/selector_parser.rs
+++ b/components/style/servo/selector_parser.rs
@@ -29,7 +29,7 @@ use style_traits::{ParseError, StyleParseErrorKind};
/// A pseudo-element, both public and private.
///
/// NB: If you add to this list, be sure to update `each_simple_pseudo_element` too.
-#[derive(Clone, Debug, Eq, Hash, MallocSizeOf, PartialEq, ToShmem)]
+#[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, MallocSizeOf, PartialEq, Serialize, ToShmem)]
#[allow(missing_docs)]
#[repr(usize)]
pub enum PseudoElement {