diff --git a/SJ.Buzzer/Helper/BuzzerDevice.cs b/SJ.Buzzer/Helper/BuzzerDevice.cs
index 7664f44..acb4636 100644
--- a/SJ.Buzzer/Helper/BuzzerDevice.cs
+++ b/SJ.Buzzer/Helper/BuzzerDevice.cs
@@ -186,7 +186,7 @@ public Guid SelectedController
         /// <summary>
         /// Art der Abfrage des Buzzer eines Controllers.
         /// </summary>
-        private QueryBuzzerType QueryBuzzer
+        private static QueryBuzzerType QueryBuzzer
         {
             get;
             set;