Index: ActiviteitenOpvolging/ActiviteitenOpvolging/domain/managers/implementations/EmployeeManager.vb
===================================================================
diff -u -r1718 -r1721
--- ActiviteitenOpvolging/ActiviteitenOpvolging/domain/managers/implementations/EmployeeManager.vb	(.../EmployeeManager.vb)	(revision 1718)
+++ ActiviteitenOpvolging/ActiviteitenOpvolging/domain/managers/implementations/EmployeeManager.vb	(.../EmployeeManager.vb)	(revision 1721)
@@ -41,7 +41,7 @@
 
     ''' <inheritdoc/>
     Public Function GetSelectedEmployee(employeeNumber As Integer) As IEmployee Implements IEmployeeManager.GetSelectedEmployee
-        If _selectedEmployeesDictionary.ContainsKey(employeeNumber) Then
+        If not _selectedEmployeesDictionary.ContainsKey(employeeNumber) Then
             Throw New InternalException($"Employee number for getting the selected value is invalid, key value: {employeeNumber}.")
         End If
         'Get the value.