diff --git a/CHANGELOG-3.4.md b/CHANGELOG-3.4.md
index 63926da1e..ded93935e 100644
--- a/CHANGELOG-3.4.md
+++ b/CHANGELOG-3.4.md
@@ -972,7 +972,7 @@ Note: **v3.5 will deprecate `etcd --log-package-levels` flag for `capnslog`**; `
   - Now [`(r *raft) Step` returns `raft.ErrProposalDropped`](https://github.com/etcd-io/etcd/pull/9137) if a proposal has been ignored.
   - e.g. a node is removed from cluster, or [`raftpb.MsgProp` arrives at current leader while there is an ongoing leadership transfer](https://github.com/etcd-io/etcd/issues/8975).
 - Improve [Raft `becomeLeader` and `stepLeader`](https://github.com/etcd-io/etcd/pull/9073) by keeping track of latest `pb.EntryConfChange` index.
-  - Previously record `pendingConf` boolean field scanning the entire tail of the log, which can delay hearbeat send.
+  - Previously record `pendingConf` boolean field scanning the entire tail of the log, which can delay heartbeat send.
 - Fix [missing learner nodes on `(n *node) ApplyConfChange`](https://github.com/etcd-io/etcd/pull/9116).
 - Add [`raft.Config.MaxUncommittedEntriesSize`](https://github.com/etcd-io/etcd/pull/10167) to limit the total size of the uncommitted entries in bytes.
   - Once exceeded, raft returns `raft.ErrProposalDropped` error.
diff --git a/raft/raft.go b/raft/raft.go
index 73ed83c08..5e3026ac8 100644
--- a/raft/raft.go
+++ b/raft/raft.go
@@ -662,7 +662,7 @@ func (r *raft) tickHeartbeat() {
 		r.electionElapsed = 0
 		if r.checkQuorum {
 			if err := r.Step(pb.Message{From: r.id, Type: pb.MsgCheckQuorum}); err != nil {
-				r.logger.Debugf("error occurred during checking sending hearbeat: %v", err)
+				r.logger.Debugf("error occurred during checking sending heartbeat: %v", err)
 			}
 		}
 		// If current leader cannot transfer leadership in electionTimeout, it becomes leader again.
@@ -678,7 +678,7 @@ func (r *raft) tickHeartbeat() {
 	if r.heartbeatElapsed >= r.heartbeatTimeout {
 		r.heartbeatElapsed = 0
 		if err := r.Step(pb.Message{From: r.id, Type: pb.MsgBeat}); err != nil {
-			r.logger.Debugf("error occurred during checking sending hearbeat: %v", err)
+			r.logger.Debugf("error occurred during checking sending heartbeat: %v", err)
 		}
 	}
 }