diff --git a/src/main/java/com/teragrep/rlp_03/client/ClientFactory.java b/src/main/java/com/teragrep/rlp_03/client/ClientFactory.java
index ed093f7c..171e6a49 100644
--- a/src/main/java/com/teragrep/rlp_03/client/ClientFactory.java
+++ b/src/main/java/com/teragrep/rlp_03/client/ClientFactory.java
@@ -83,13 +83,8 @@ public ClientFactory(ConnectContextFactory connectContextFactory, EventLoop even
      * 
      * @param inetSocketAddress destination {@link InetSocketAddress} to connect to.
      * @return a {@link Client} {@link CompletableFuture}.
-     * @throws IOException          if connection attempt fails.
-     * @throws InterruptedException if waiting for connection establishment is interrupted.
-     * @throws ExecutionException   if connection establishment fails to complete successfully.
-     * @throws TimeoutException     if connection establishment times out.
      */
-    public CompletableFuture<Client> open(InetSocketAddress inetSocketAddress)
-            throws IOException, InterruptedException, ExecutionException, TimeoutException {
+    public CompletableFuture<Client> open(InetSocketAddress inetSocketAddress) {
         // this is for returning ready connection
         CompletableFuture<EstablishedContext> readyContextFuture = new CompletableFuture<>();
         Consumer<EstablishedContext> establishedContextConsumer = readyContextFuture::complete;
@@ -100,14 +95,14 @@ public CompletableFuture<Client> open(InetSocketAddress inetSocketAddress)
         try {
             connectContext = connectContextFactory
                     .create(inetSocketAddress, clientDelegate, establishedContextConsumer);
+            LOGGER.debug("registering to eventLoop <{}>", eventLoop);
+            eventLoop.register(connectContext);
+            LOGGER.debug("registered to eventLoop <{}>", eventLoop);
         }
         catch (IOException ioException) {
             clientDelegate.close();
-            throw ioException;
+            readyContextFuture.completeExceptionally(ioException);
         }
-        LOGGER.debug("registering to eventLoop <{}>", eventLoop);
-        eventLoop.register(connectContext);
-        LOGGER.debug("registered to eventLoop <{}>", eventLoop);
 
         return readyContextFuture.thenApply(clientDelegate::create);
     }