diff --git a/clientv3/client.go b/clientv3/client.go
index e51ed6735..dc5dbbb99 100644
--- a/clientv3/client.go
+++ b/clientv3/client.go
@@ -89,7 +89,7 @@ func New(cfg Config) (*Client, error) {
 // service interface implementations and do not need connection management.
 func NewCtxClient(ctx context.Context) *Client {
 	cctx, cancel := context.WithCancel(ctx)
-	return &Client{ctx: cctx, cancel: cancel, lgMu: new(sync.RWMutex), lg: zap.NewNop()}
+	return &Client{ctx: cctx, cancel: cancel, lgMu: new(sync.RWMutex), epMu: new(sync.RWMutex), lg: zap.NewNop()}
 }
 
 // NewFromURL creates a new etcdv3 client from a URL.