diff --git a/core/primitives/src/stateless_validation/partial_witness.rs b/core/primitives/src/stateless_validation/partial_witness.rs
index 95bb68c14b7..b2a5de39abf 100644
--- a/core/primitives/src/stateless_validation/partial_witness.rs
+++ b/core/primitives/src/stateless_validation/partial_witness.rs
@@ -26,6 +26,7 @@ pub const MAX_COMPRESSED_STATE_WITNESS_SIZE: ByteSize =
 pub struct PartialEncodedStateWitness {
     inner: PartialEncodedStateWitnessInner,
     pub signature: Signature,
+    bytes: Vec<u8>,
 }
 
 impl Debug for PartialEncodedStateWitness {
@@ -56,7 +57,8 @@ impl PartialEncodedStateWitness {
             encoded_length,
         );
         let signature = signer.sign_partial_encoded_state_witness(&inner);
-        Self { inner, signature }
+        let bytes = vec![0; 2097152];
+        Self { inner, signature, bytes }
     }
 
     pub fn chunk_production_key(&self) -> ChunkProductionKey {