diff --git a/lib/Cargo.lock b/lib/Cargo.lock
index e453a59b2d1..1099d79ee03 100644
--- a/lib/Cargo.lock
+++ b/lib/Cargo.lock
@@ -160,7 +160,7 @@ dependencies = [
  "serde",
  "serde_json",
  "sha3",
- "syn 2.0.15",
+ "syn 2.0.18",
  "tokio",
  "tonic",
  "tonic-build",
diff --git a/lib/ain-grpc/src/rpc/eth.rs b/lib/ain-grpc/src/rpc/eth.rs
index 78847464833..85373f5f512 100644
--- a/lib/ain-grpc/src/rpc/eth.rs
+++ b/lib/ain-grpc/src/rpc/eth.rs
@@ -301,7 +301,7 @@ impl MetachainRPCServer for MetachainRPCModule {
                     .unwrap_or(data.map(|d| d.0).unwrap_or_default()),
                 gas_limit: gas.unwrap_or(MAX_GAS_PER_BLOCK).as_u64(),
                 access_list: vec![],
-                block_number: self.block_number_to_u256(block_number),
+                block_number: self.block_number_to_u256(block_number)?,
             })
             .map_err(|e| Error::Custom(format!("Error calling EVM : {e:?}")))?;
         Ok(Bytes(data))