diff --git a/src/BreCalClient/EditTimesAgencyIncomingControl.xaml.cs b/src/BreCalClient/EditTimesAgencyIncomingControl.xaml.cs
index cc54cac..1a5479a 100644
--- a/src/BreCalClient/EditTimesAgencyIncomingControl.xaml.cs
+++ b/src/BreCalClient/EditTimesAgencyIncomingControl.xaml.cs
@@ -104,7 +104,7 @@ namespace BreCalClient
         {
             message = "";
 
-            if ((this.datePickerETA.Value != this.Times.EtaBerth) || (this.datePickerETA_End.Value != this.Times.EtaBerth)) // something has changed
+            if ((this.datePickerETA.Value != this.Times.EtaBerth) || (this.datePickerETA_End.Value != this.Times.EtaIntervalEnd)) // something has changed
             {
                 if (datePickerETA.Value.IsTooOld() || datePickerETA_End.Value.IsTooOld())
                 {