diff --git a/components/util/str.rs b/components/util/str.rs
index 97a3013ecad..4b190fa099a 100644
--- a/components/util/str.rs
+++ b/components/util/str.rs
@@ -24,7 +24,7 @@ use std::slice;
 use std::str::{CharIndices, FromStr, Split, from_utf8};
 
 #[derive(Clone, PartialOrd, Ord, PartialEq, Eq, Deserialize, Serialize, Hash, Debug)]
-pub struct DOMString(pub String);
+pub struct DOMString(String);
 
 impl !Send for DOMString {}