diff --git a/src/lib.rs b/src/lib.rs
index 535fa40..5c4c6e9 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -340,7 +340,7 @@ pub struct ArtistId {
 
 impl AsRef<ArtistId> for ArtistId {
     fn as_ref(&self) -> &ArtistId {
-        self
+        &self
     }
 }