diff --git a/Source/MQTTnet.PowerShell/Cmdlets/PublishMqttMessageCmdlet.cs b/Source/MQTTnet.PowerShell/Cmdlets/PublishMqttMessageCmdlet.cs
index b44a9289..b4ba1a67 100644
--- a/Source/MQTTnet.PowerShell/Cmdlets/PublishMqttMessageCmdlet.cs
+++ b/Source/MQTTnet.PowerShell/Cmdlets/PublishMqttMessageCmdlet.cs
@@ -57,7 +57,7 @@ public class PublishMqttMessageCmdlet : PSCmdlet
             foreach (var key in UserProperties.Keys)
             {
                 var value = UserProperties[key]?.ToString() ?? string.Empty;
-                msgBuilder.WithUserProperty(key.ToString()!, value);
+                msgBuilder.WithUserProperty(key.ToString(), value);
             }
         }
 
diff --git a/Source/MQTTnet.PowerShell/Cmdlets/ShowMqttExamplesCmdlet.cs b/Source/MQTTnet.PowerShell/Cmdlets/ShowMqttExamplesCmdlet.cs
index 8a526f08..9b317425 100644
--- a/Source/MQTTnet.PowerShell/Cmdlets/ShowMqttExamplesCmdlet.cs
+++ b/Source/MQTTnet.PowerShell/Cmdlets/ShowMqttExamplesCmdlet.cs
@@ -31,7 +31,7 @@ MQTTnet PowerShell Module - Quick Examples
 
 3. WebSocket Connection:
    $session = New-MqttSession
-   Connect-MqttSession -Session $session -WebSocketUri 'broker.hivemq.com:8000/mqtt'
+   Connect-MqttSession -Session $session -WebSocketUri 'ws://broker.hivemq.com:8000/mqtt'
    Publish-MqttMessage -Session $session -Topic 'test/ws' -Payload 'Hello WS'
 
 4. TLS/SSL Connection:
diff --git a/Source/MQTTnet.PowerShell/README.md b/Source/MQTTnet.PowerShell/README.md
index 6e087219..1f4ba410 100644
--- a/Source/MQTTnet.PowerShell/README.md
+++ b/Source/MQTTnet.PowerShell/README.md
@@ -122,7 +122,7 @@ Connect-MqttSession -Session $session -Host "broker.hivemq.com" -Port 8883 `
 
 **WebSocket Connection:**
 ```powershell
-Connect-MqttSession -Session $session -WebSocketUri "broker.hivemq.com:8000/mqtt"
+Connect-MqttSession -Session $session -WebSocketUri "ws://broker.hivemq.com:8000/mqtt"
 ```
 
 **With Authentication:**
diff --git a/Source/MQTTnet.PowerShell/Test.ps1 b/Source/MQTTnet.PowerShell/Test.ps1
index 46afabe5..5c76ccee 100644
--- a/Source/MQTTnet.PowerShell/Test.ps1
+++ b/Source/MQTTnet.PowerShell/Test.ps1
@@ -78,7 +78,7 @@ Write-Host "`nTesting WebSocket connection..." -ForegroundColor Yellow
 $wsSession = New-MqttSession
 
 try {
-    Connect-MqttSession -Session $wsSession -WebSocketUri "broker.hivemq.com:8000/mqtt"
+    Connect-MqttSession -Session $wsSession -WebSocketUri "ws://broker.hivemq.com:8000/mqtt"
     Write-Host "Connected via WebSocket!" -ForegroundColor Green
     
     Publish-MqttMessage -Session $wsSession -Topic "test/websocket" -Payload "Hello via WebSocket!"