diff --git a/protocols/grpc/api/src/main/java/org/onosproject/grpc/api/GrpcClient.java b/protocols/grpc/api/src/main/java/org/onosproject/grpc/api/GrpcClient.java
index d529529..7957006 100644
--- a/protocols/grpc/api/src/main/java/org/onosproject/grpc/api/GrpcClient.java
+++ b/protocols/grpc/api/src/main/java/org/onosproject/grpc/api/GrpcClient.java
@@ -28,11 +28,8 @@
 
     /**
      * Shutdowns the client by terminating any active RPC.
-     *
-     * @return a completable future to signal the completion of the shutdown
-     * procedure
      */
-    CompletableFuture<Void> shutdown();
+    void shutdown();
 
     /**
      * This method provides a coarse modelling of gRPC channel {@link