diff --git a/raft/raft.go b/raft/raft.go
index 5e3026ac8..14b5b76dd 100644
--- a/raft/raft.go
+++ b/raft/raft.go
@@ -1154,7 +1154,7 @@ func stepLeader(r *raft, m pb.Message) error {
 				// the rejection's log term. If a probe at one of these indexes
 				// succeeded, its log term at that index would match the leader's,
 				// i.e. 3 or 5 in this example. But the follower already told the
-				// leader that it is still at term 2 at index 9, and since the
+				// leader that it is still at term 2 at index 6, and since the
 				// log term only ever goes up (within a log), this is a contradiction.
 				//
 				// At index 1, however, the leader can draw no such conclusion,