diff --git a/src/bellperson/r1cs.rs b/src/bellperson/r1cs.rs
index f8e7c86..d03f362 100644
--- a/src/bellperson/r1cs.rs
+++ b/src/bellperson/r1cs.rs
@@ -41,7 +41,7 @@ where
     let X = &self.input_assignment[1..];
 
     let comm_W = W.commit(ck);
-    let instance = R1CSInstance::<G>::new(&shape, &comm_W, X)?;
+    let instance = R1CSInstance::<G>::new(shape, &comm_W, X)?;
 
     Ok((instance, W))
   }