1 files changed, 10 insertions, 9 deletions
diff --git a/RSSDP/SsdpDevice.cs b/RSSDP/SsdpDevice.cs
index 4005d836d..3e4261b6a 100644
--- a/RSSDP/SsdpDevice.cs
+++ b/RSSDP/SsdpDevice.cs
@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
+using System.Globalization;
 using Rssdp.Infrastructure;
 
 namespace Rssdp
@@ -134,11 +135,13 @@ namespace Rssdp
         {
             get
             {
-                return String.Format("urn:{0}:{3}:{1}:{2}",
-                this.DeviceTypeNamespace ?? String.Empty,
-                this.DeviceType ?? String.Empty,
-                this.DeviceVersion,
-                this.DeviceClass ?? "device");
+                return String.Format(
+                    CultureInfo.InvariantCulture,
+                    "urn:{0}:{3}:{1}:{2}",
+                    this.DeviceTypeNamespace ?? String.Empty,
+                    this.DeviceType ?? String.Empty,
+                    this.DeviceVersion,
+                    this.DeviceClass ?? "device");
             }
         }
 
@@ -168,10 +171,8 @@ namespace Rssdp
                 {
                     return "uuid:" + this.Uuid;
                 }
-                else
-                {
-                    return _Udn;
-                }
+
+                return _Udn;
             }
 
             set