diff --git a/proxy/grpcproxy/watch.go b/proxy/grpcproxy/watch.go
index 62e8df4d2bde..88c63af7a9cd 100644
--- a/proxy/grpcproxy/watch.go
+++ b/proxy/grpcproxy/watch.go
@@ -45,7 +45,7 @@ type watchProxy struct {
 }
 
 const (
-	lostLeaderKey  = "__lostleader" // watched to detect leader l oss
+	lostLeaderKey  = "__lostleader" // watched to detect leader loss
 	retryPerSecond = 10
 )