diff --git a/components/gfx/text/util.rs b/components/gfx/text/util.rs
index c5059bbff10..9aee736df61 100644
--- a/components/gfx/text/util.rs
+++ b/components/gfx/text/util.rs
@@ -82,7 +82,7 @@ pub fn transform_text(text: &str, mode: CompressionMode,
         }
     };
 
-    return (out_str.into_string(), out_whitespace);
+    return (out_str, out_whitespace);
 
     fn is_in_whitespace(ch: char, mode: CompressionMode) -> bool {
         match (ch, mode) {
diff --git a/components/style/namespaces.rs b/components/style/namespaces.rs
index 6ea1e4b4c3a..9c66cfd13ae 100644
--- a/components/style/namespaces.rs
+++ b/components/style/namespaces.rs
@@ -36,7 +36,7 @@ pub fn parse_namespace_rule(rule: AtRule, namespaces: &mut NamespaceMap) {
         match component_value {
             Ident(value) => {
                 if prefix.is_some() { syntax_error!() }
-                prefix = Some(value.into_string());
+                prefix = Some(value);
             },
             URL(value) | String(value) => {
                 if ns.is_some() { syntax_error!() }