diff --git a/httpclient5/src/main/java/org/apache/hc/client5/http/impl/nio/PoolingAsyncClientConnectionManager.java b/httpclient5/src/main/java/org/apache/hc/client5/http/impl/nio/PoolingAsyncClientConnectionManager.java
index 0212e3e49..b56c24628 100644
--- a/httpclient5/src/main/java/org/apache/hc/client5/http/impl/nio/PoolingAsyncClientConnectionManager.java
+++ b/httpclient5/src/main/java/org/apache/hc/client5/http/impl/nio/PoolingAsyncClientConnectionManager.java
@@ -464,7 +464,6 @@ public void completed(final ManagedAsyncClientConnection connection) {
                             if (LOG.isDebugEnabled()) {
                                 LOG.debug("{} connected {}", ConnPoolSupport.getId(endpoint), ConnPoolSupport.getId(connection));
                             }
-                            final ProtocolVersion protocolVersion = connection.getProtocolVersion();
                             final Timeout socketTimeout = connectionConfig.getSocketTimeout();
                             if (socketTimeout != null) {
                                 connection.setSocketTimeout(socketTimeout);