diff --git a/crates/tests/src/testing_tool/chain.rs b/crates/tests/src/testing_tool/chain.rs
index 43bd5d016..fad064b11 100644
--- a/crates/tests/src/testing_tool/chain.rs
+++ b/crates/tests/src/testing_tool/chain.rs
@@ -459,7 +459,7 @@ pub async fn construct_block_with_timestamp(
     if !refresh_mem_pool {
         assert!(
             deposit_requests.is_empty(),
-            "skip refresh mem pool, bug deposits isn't empty"
+            "skip refresh mem pool, but deposits isn't empty"
         )
     }
     let stake_cell_owner_lock_hash = H256::zero();