diff --git a/pallets/slow-clap/src/benchmarking.rs b/pallets/slow-clap/src/benchmarking.rs
index 26fb21d..cd01549 100644
--- a/pallets/slow-clap/src/benchmarking.rs
+++ b/pallets/slow-clap/src/benchmarking.rs
@@ -50,8 +50,8 @@ benchmarks! {
 
     self_applause {
         let session_index = T::ValidatorSet::session_index();
-        let authority = T::AuthorityId::generate_pair(Some(vec![69u8]));
-        let bounded_authorities = WeakBoundedVec::<_, T::MaxAuthorities>::try_from(vec![authority.clone()])
+        let authorities = vec![T::AuthorityId::generate_pair(None)];
+        let bounded_authorities = WeakBoundedVec::<_, T::MaxAuthorities>::try_from(authorities.clone())
             .map_err(|()| "more than the maximum number of keys provided")?;
         Authorities::<T>::set(&session_index, bounded_authorities);
 
@@ -81,8 +81,11 @@ benchmarks! {
             amount,
         };
 
+        let authority_id = authorities
+            .get(0usize)
+            .expect("first authority should exist");
         let encoded_clap = clap.encode();
-        let signature = authority.sign(&encoded_clap).unwrap();
+        let signature = authority_id.sign(&encoded_clap).unwrap();
         <Pallet<T>>::slow_clap(RawOrigin::None.into(), clap, signature)?;
         <Pallet::<T>>::trigger_nullification_for_benchmark();