diff --git a/src/convert.rs b/src/convert.rs
index fb6fbfb03159c8964dc559a9844619fb986fc6ac..ebca8e2a0629070ceb0ca1c239ca21d861637014 100644
--- a/src/convert.rs
+++ b/src/convert.rs
@@ -102,7 +102,7 @@ impl<'a> IntoAttributeValue for &'a String {
 
 impl<'a> IntoAttributeValue for &'a str {
     fn into_attribute_value(self) -> Option<String> {
-        Some((*self).to_owned())
+        Some(self.to_owned())
     }
 }