diff --git a/other/java/client/src/main/java/seaweedfs/client/FilerGrpcClient.java b/other/java/client/src/main/java/seaweedfs/client/FilerGrpcClient.java
index 03eeee27d..11ae297ef 100644
--- a/other/java/client/src/main/java/seaweedfs/client/FilerGrpcClient.java
+++ b/other/java/client/src/main/java/seaweedfs/client/FilerGrpcClient.java
@@ -1,12 +1,10 @@
 package seaweedfs.client;
 
-import io.grpc.Deadline;
 import io.grpc.ManagedChannel;
 import io.grpc.ManagedChannelBuilder;
 import io.grpc.netty.shaded.io.grpc.netty.NegotiationType;
 import io.grpc.netty.shaded.io.grpc.netty.NettyChannelBuilder;
 import io.grpc.netty.shaded.io.netty.handler.ssl.SslContext;
-import io.grpc.netty.shaded.io.netty.handler.codec.http2.Http2Settings;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;