diff --git a/ingester-grpc/src/main/java/io/greptime/rpc/GrpcClient.java b/ingester-grpc/src/main/java/io/greptime/rpc/GrpcClient.java
index 562a938..18ac1cf 100644
--- a/ingester-grpc/src/main/java/io/greptime/rpc/GrpcClient.java
+++ b/ingester-grpc/src/main/java/io/greptime/rpc/GrpcClient.java
@@ -573,10 +573,10 @@ private IdChannel newChannel(Endpoint endpoint) {
         NettyChannelBuilder innerChannelBuilder =
                 NettyChannelBuilder.forAddress(endpoint.getAddr(), endpoint.getPort());
 
-        if (this.opts.getTlsOptions().isEmpty()) {
-            innerChannelBuilder.usePlaintext();
-        } else {
+        if (this.opts.getTlsOptions().isPresent()) {
             innerChannelBuilder.useTransportSecurity().sslContext(newSslContext(this.opts.getTlsOptions().get()));
+        } else {
+            innerChannelBuilder.usePlaintext();
         }
 
         ManagedChannel innerChannel = innerChannelBuilder.executor(this.asyncPool) //