diff --git a/consensus/src/operations.rs b/consensus/src/operations.rs
index cd44bc3fd0..7dddcef629 100644
--- a/consensus/src/operations.rs
+++ b/consensus/src/operations.rs
@@ -27,7 +27,7 @@ pub struct CallParams {
     pub block_gas_limit: u64,
     pub generator_pubkey: node_data::bls::PublicKey,
     pub missed_generators: Vec<StakePublicKey>,
-    pub voters_pubkey: Vec<VoterWithCredits>,
+    pub voters_pubkey: Option<Vec<VoterWithCredits>>,
 }
 
 #[derive(Default)]
diff --git a/consensus/src/proposal/block_generator.rs b/consensus/src/proposal/block_generator.rs
index 2ae33bd381..0eda263e0d 100644
--- a/consensus/src/proposal/block_generator.rs
+++ b/consensus/src/proposal/block_generator.rs
@@ -97,7 +97,7 @@ impl<T: Operations> Generator<T> {
             block_gas_limit: config::DEFAULT_BLOCK_GAS_LIMIT,
             generator_pubkey: ru.pubkey_bls.clone(),
             missed_generators,
-            voters_pubkey: voters.to_owned(),
+            voters_pubkey: Some(voters.to_owned()),
         };
 
         let result =
diff --git a/rusk/benches/block_ingestion.rs b/rusk/benches/block_ingestion.rs
index 38eaf31e3a..c07f06d4ec 100644
--- a/rusk/benches/block_ingestion.rs
+++ b/rusk/benches/block_ingestion.rs
@@ -105,7 +105,7 @@ pub fn accept_benchmark(c: &mut Criterion) {
                             txs,
                             None,
                             &[],
-                            &[],
+                            None,
                         )
                         .expect("Accepting transactions should succeed");