diff --git a/src/braft/replicator.cpp b/src/braft/replicator.cpp
index f63a3083..788277ca 100644
--- a/src/braft/replicator.cpp
+++ b/src/braft/replicator.cpp
@@ -320,7 +320,7 @@ void Replicator::_on_heartbeat_returned(
                   << ", group " << r->_options.group_id;
         butil::Status status;
         status.set_error(EHIGHERTERMRESPONSE, "Leader receives higher term "
-                "hearbeat_response from peer:%s", r->_options.peer_id.to_string().c_str());
+                "heartbeat_response from peer:%s", r->_options.peer_id.to_string().c_str());
         r->_destroy();
         node_impl->increase_term_to(response->term(), status);
         node_impl->Release();
@@ -888,7 +888,7 @@ void Replicator::_on_install_snapshot_returned(
             succ = false;
             ss << " fail.";
             LOG(INFO) << ss.str();
-            // Let hearbeat do step down
+            // Let heartbeat do step down
             break;
         }
         // Success 
diff --git a/src/braft/replicator.h b/src/braft/replicator.h
index 9bdf380e..97c1ef5d 100644
--- a/src/braft/replicator.h
+++ b/src/braft/replicator.h
@@ -141,7 +141,7 @@ class BAIDU_CACHELINE_ALIGNMENT Replicator {
 
     int _prepare_entry(int offset, EntryMeta* em, butil::IOBuf* data);
     void _wait_more_entries();
-    void _send_empty_entries(bool is_hearbeat);
+    void _send_empty_entries(bool is_heartbeat);
     void _send_entries();
     void _notify_on_caught_up(int error_code, bool);
     int _fill_common_fields(AppendEntriesRequest* request, int64_t prev_log_index,