diff --git a/src/braft/raft.h b/src/braft/raft.h
index 8a7f5d8e..cb80163a 100644
--- a/src/braft/raft.h
+++ b/src/braft/raft.h
@@ -395,7 +395,7 @@ struct NodeStatus {
     // If the value is 0, means no pending logs.
     // 
     // WARNING: if this value is not 0, and keep the same in a long time,
-    // means something happend to prevent the node to commit logs in a
+    // means something happened to prevent the node to commit logs in a
     // large probability, and users should check carefully to find out
     // the reasons.
     int64_t pending_index;
@@ -410,7 +410,7 @@ struct NodeStatus {
     // The current applying index. If the value is 0, means no applying log.
     //
     // WARNING: if this value is not 0, and keep the same in a long time, means
-    // the apply thread hung, users should check if a deadlock happend, or some
+    // the apply thread hung, users should check if a deadlock happened, or some
     // time-consuming operations is handling in place.
     int64_t applying_index;