diff --git a/SampleApplications/SDK/Opc.Ua.Client/MonitoredItem.cs b/SampleApplications/SDK/Opc.Ua.Client/MonitoredItem.cs
index 7a65630911..349be32e63 100644
--- a/SampleApplications/SDK/Opc.Ua.Client/MonitoredItem.cs
+++ b/SampleApplications/SDK/Opc.Ua.Client/MonitoredItem.cs
@@ -607,7 +607,7 @@ namespace Opc.Ua.Client
                         // validate SourceTimestamp of the notification.
                         if (datachange.Value != null && datachange.Value.SourceTimestamp > DateTime.UtcNow)
                         {
-                            Utils.Trace("Received SourceTimestamp {0} is in the future for MonitoredItemId {1}", datachange.Value.ServerTimestamp.ToLocalTime(), ClientHandle);
+                            Utils.Trace("Received SourceTimestamp {0} is in the future for MonitoredItemId {1}", datachange.Value.SourceTimestamp.ToLocalTime(), ClientHandle);
                         }
 
                         if (datachange.Value != null && datachange.Value.StatusCode.Overflow)