diff --git a/servo/components/style/values/specified/font.rs b/servo/components/style/values/specified/font.rs
index da2fa94..3ceab11 100644
--- a/servo/components/style/values/specified/font.rs
+++ b/servo/components/style/values/specified/font.rs
@@ -11,7 +11,7 @@ use cssparser::{Parser, Token};
 use parser::{Parse, ParserContext};
 use properties::longhands::system_font::SystemFont;
 #[allow(unused_imports)]
-use std::ascii::AsciiExt;
+#[allow(unused_imports)] use std::ascii::AsciiExt;
 use std::fmt;
 use style_traits::{ToCss, StyleParseErrorKind, ParseError};
 use values::CustomIdent;