diff --git a/c/polyjuice.h b/c/polyjuice.h
index 17124708..359a28a8 100644
--- a/c/polyjuice.h
+++ b/c/polyjuice.h
@@ -1571,7 +1571,7 @@ int run_polyjuice() {
       return ret;
     }
     /* emit POLYJUICE_SYSTEM log to Godwoken */
-    ret = emit_evm_result_log(&context, min_gas, transfer_ret);
+    ret = emit_evm_result_log(&context, gas_used, transfer_ret);
     if (ret != 0) {
       ckb_debug("emit_evm_result_log failed");
       return ret;
diff --git a/polyjuice-tests/src/test_cases/native_token_transfer.rs b/polyjuice-tests/src/test_cases/native_token_transfer.rs
index b74a6036..acbf229b 100644
--- a/polyjuice-tests/src/test_cases/native_token_transfer.rs
+++ b/polyjuice-tests/src/test_cases/native_token_transfer.rs
@@ -7,7 +7,7 @@ use gw_types::{
 
 use crate::{
     ctx::MockChain,
-    helper::{MockContractInfo, PolyjuiceArgsBuilder, CREATOR_ACCOUNT_ID},
+    helper::{parse_log, Log, MockContractInfo, PolyjuiceArgsBuilder, CREATOR_ACCOUNT_ID},
 };
 
 #[test]
@@ -66,6 +66,11 @@ fn native_token_transfer_unregistered_address_test() -> anyhow::Result<()> {
     let run_result = chain.execute_raw(raw_tx)?;
     assert_eq!(run_result.exit_code, 0);
 
+    let system_log = run_result.write.logs.last().map(parse_log);
+    if let Some(Log::PolyjuiceSystem { gas_used, .. }) = system_log {
+        assert_eq!(gas_used, 21000 + 25000);
+    }
+
     let account_id = chain.get_account_id_by_eth_address(&to_addr)?;
     assert_eq!(Some(6), account_id);
     let from_balance = chain.get_balance(&from_addr)?;