diff --git a/core/executor/src/precompiles/ckb_mbt_verify.rs b/core/executor/src/precompiles/ckb_mbt_verify.rs
index 349a6d64f..3e29d3799 100644
--- a/core/executor/src/precompiles/ckb_mbt_verify.rs
+++ b/core/executor/src/precompiles/ckb_mbt_verify.rs
@@ -66,8 +66,9 @@ impl PrecompileContract for CMBTVerify {
     }
 }
 
+#[allow(unused_parens)]
 fn parse_input(input: &[u8]) -> Result<VerifyProofPayload, PrecompileFailure> {
-    <VerifyProofPayload as AbiDecode>::decode(input).map_err(|_| err!(_, "decode input"))
+    <(VerifyProofPayload) as AbiDecode>::decode(input).map_err(|_| err!(_, "decode input"))
 }
 
 fn inner_verify_proof(payload: VerifyProofPayload) -> Result<(), PrecompileFailure> {
diff --git a/core/executor/src/precompiles/get_header.rs b/core/executor/src/precompiles/get_header.rs
index bca27de2b..5a50cdfc7 100644
--- a/core/executor/src/precompiles/get_header.rs
+++ b/core/executor/src/precompiles/get_header.rs
@@ -1,10 +1,11 @@
-use ethers::abi::AbiDecode;
+use ethers::abi::{AbiDecode, AbiEncode};
 use evm::executor::stack::{PrecompileFailure, PrecompileOutput};
 use evm::{Context, ExitError, ExitSucceed};
 
 use protocol::types::{H160, H256};
 
 use crate::precompiles::{axon_precompile_address, PrecompileContract};
+use crate::system_contract::ckb_light_client::ckb_light_client_abi;
 use crate::{err, system_contract::ckb_light_client::CkbHeaderReader, CURRENT_HEADER_CELL_ROOT};
 
 #[derive(Default, Clone)]
@@ -14,6 +15,7 @@ impl PrecompileContract for GetHeader {
     const ADDRESS: H160 = axon_precompile_address(0x02);
     const MIN_GAS: u64 = 42000;
 
+    #[allow(unused_parens, clippy::double_parens)]
     fn exec_fn(
         input: &[u8],
         gas_limit: Option<u64>,
@@ -39,10 +41,13 @@ impl PrecompileContract for GetHeader {
             return err!("get header return None");
         }
 
+        let header =
+            <ckb_light_client_abi::Header as AbiDecode>::decode(header_opt.unwrap()).unwrap();
+
         Ok((
             PrecompileOutput {
                 exit_status: ExitSucceed::Returned,
-                output:      header_opt.unwrap(),
+                output:      AbiEncode::encode((header)),
             },
             gas,
         ))