diff --git a/src/signature.rs b/src/signature.rs
index 5e662f9..9167c19 100644
--- a/src/signature.rs
+++ b/src/signature.rs
@@ -113,9 +113,9 @@ pub fn aggregate(signatures: &[Signature]) -> Result<Signature, Error> {
     }
 
     let res = signatures
-        .into_iter()
+        .iter()
         .fold(G2Projective::identity(), |acc, signature| {
-            acc + &signature.0
+            acc + signature.0
         });
 
     Ok(Signature(res.into()))