diff --git a/websockets-jsr/src/test/java/io/undertow/websockets/jsr/test/reconnect/ClientEndpointReconnectTestCase.java b/websockets-jsr/src/test/java/io/undertow/websockets/jsr/test/reconnect/ClientEndpointReconnectTestCase.java
index 66dc883948..52ce0b069f 100644
--- a/websockets-jsr/src/test/java/io/undertow/websockets/jsr/test/reconnect/ClientEndpointReconnectTestCase.java
+++ b/websockets-jsr/src/test/java/io/undertow/websockets/jsr/test/reconnect/ClientEndpointReconnectTestCase.java
@@ -113,6 +113,7 @@ public void testAnnotatedClientEndpoint() throws Exception {
         session.getBasicRemote().sendText("close");
         Assert.assertEquals("CLOSE", endpoint.message());
         Assert.assertEquals("OPEN", endpoint.message());
+        Assert.assertTrue(session.isOpen()); // Verify session is open before sending the next message
         session.getBasicRemote().sendText("hi");
         Assert.assertEquals("MESSAGE-ECHO-hi", endpoint.message());
         session.getBasicRemote().sendText("close");