diff --git a/src/zk/circuit/mint_contract.rs b/src/zk/circuit/mint_contract.rs
index e1df10e47..f937cbd7b 100644
--- a/src/zk/circuit/mint_contract.rs
+++ b/src/zk/circuit/mint_contract.rs
@@ -394,6 +394,8 @@ mod tests {
         proof.verify(&verifying_key, &public_inputs)?;
         println!("Proof verified [{:?}]", now.elapsed());
 
+        println!("Proof size [{} kB]", proof.as_ref().len() as f64 / 1024.0);
+
         Ok(())
     }
 }