diff --git a/src/plonk/permutation/prover.rs b/src/plonk/permutation/prover.rs
index fb75a0a..fe7dd2f 100644
--- a/src/plonk/permutation/prover.rs
+++ b/src/plonk/permutation/prover.rs
@@ -212,7 +212,7 @@ impl<C: CurveAffine> super::ProvingKey<C> {
             .collect()
     }
 
-    fn open<'a>(&'a self, x: ChallengeX<C>) -> impl Iterator<Item = ProverQuery<'a, C>> + Clone {
+    fn open(&self, x: ChallengeX<C>) -> impl Iterator<Item = ProverQuery<'_, C>> + Clone {
         self.polys.iter().map(move |poly| ProverQuery {
             point: *x,
             poly,
diff --git a/src/poly/multiopen/prover.rs b/src/poly/multiopen/prover.rs
index 1eb1c58..7cf4703 100644
--- a/src/poly/multiopen/prover.rs
+++ b/src/poly/multiopen/prover.rs
@@ -136,7 +136,7 @@ impl<'a, C: CurveAffine> Query<C::Scalar> for ProverQuery<'a, C> {
     fn get_point(&self) -> C::Scalar {
         self.point
     }
-    fn get_eval(&self) -> () {}
+    fn get_eval(&self) {}
     fn get_commitment(&self) -> Self::Commitment {
         PolynomialPointer {
             poly: self.poly,