diff --git a/core/src/main/java/org/glassfish/tyrus/core/TyrusEndpointWrapper.java b/core/src/main/java/org/glassfish/tyrus/core/TyrusEndpointWrapper.java
index 4a42e9ce..f10bcc9c 100755
--- a/core/src/main/java/org/glassfish/tyrus/core/TyrusEndpointWrapper.java
+++ b/core/src/main/java/org/glassfish/tyrus/core/TyrusEndpointWrapper.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012, 2022 Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2012, 2023 Oracle and/or its affiliates. All rights reserved.
  *
  * This program and the accompanying materials are made available under the
  * terms of the Eclipse Public License v. 2.0, which is available at
@@ -752,11 +752,16 @@ Session onConnect(TyrusWebSocket socket, UpgradeRequest upgradeRequest, String s
                 throw collector.composeComprehensiveException();
             }
 
+            final TyrusConfiguration tyrusConfiguration = ((RequestContext) upgradeRequest).getTyrusConfiguration();
+            final EndpointConfig endpointConfig = configuration instanceof  ServerEndpointConfig
+                    ? new ServerEndpointConfigWrapper((ServerEndpointConfig) configuration, tyrusConfiguration.userProperties())
+                    : configuration;
+
             if (programmaticEndpoint) {
-                ((Endpoint) toCall).onOpen(session, configuration);
+                ((Endpoint) toCall).onOpen(session, endpointConfig);
             } else {
                 try {
-                    onOpen.invoke(toCall, session, configuration);
+                    onOpen.invoke(toCall, session, endpointConfig);
                 } catch (InvocationTargetException e) {
                     throw e.getCause();
                 }
diff --git a/tests/e2e/standard-config/src/test/java/org/glassfish/tyrus/test/standard_config/userproperties/WSProgramaticUserPropertiesServer.java b/tests/e2e/standard-config/src/test/java/org/glassfish/tyrus/test/standard_config/userproperties/WSProgramaticUserPropertiesServer.java
index 1c0a58f8..f95a3a17 100644
--- a/tests/e2e/standard-config/src/test/java/org/glassfish/tyrus/test/standard_config/userproperties/WSProgramaticUserPropertiesServer.java
+++ b/tests/e2e/standard-config/src/test/java/org/glassfish/tyrus/test/standard_config/userproperties/WSProgramaticUserPropertiesServer.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021, 2022 Contributors to the Eclipse Foundation.
+ * Copyright (c) 2021, 2023 Contributors to the Eclipse Foundation.
  *
  * This program and the accompanying materials are made available under the
  * terms of the Eclipse Public License v. 2.0, which is available at
@@ -68,6 +68,8 @@ private void checkKey(Map<String, Object> map, String key) {
     public void onOpen(Session session, EndpointConfig config) {
         this.session = session;
         session.addMessageHandler(this);
+        checkKey(config.getUserProperties(), UserPropertiesConfigurator.KEY_3);
+        checkKey(config.getUserProperties(), UserPropertiesConfigurator.KEY_4);
     }
 
     @Override