diff --git a/Models/EmployeeHistoryMapper.php b/Models/EmployeeHistoryMapper.php
index 4ef62a7..847cc13 100755
--- a/Models/EmployeeHistoryMapper.php
+++ b/Models/EmployeeHistoryMapper.php
@@ -54,19 +54,19 @@ final class EmployeeHistoryMapper extends DataMapperAbstract
     protected static array $belongsTo = [
         'unit'    => [
             'mapper' => UnitMapper::class,
-            'self'   => 'hr_staff_history_unit',
+            'external'   => 'hr_staff_history_unit',
         ],
         'department'    => [
             'mapper' => DepartmentMapper::class,
-            'self'   => 'hr_staff_history_department',
+            'external'   => 'hr_staff_history_department',
         ],
         'position'    => [
             'mapper' => PositionMapper::class,
-            'self'   => 'hr_staff_history_position',
+            'external'   => 'hr_staff_history_position',
         ],
         'employee'    => [
             'mapper' => EmployeeMapper::class,
-            'self'   => 'hr_staff_history_staff',
+            'external'   => 'hr_staff_history_staff',
         ],
     ];
 
diff --git a/Models/EmployeeMapper.php b/Models/EmployeeMapper.php
index 31c3a14..6b1ff62 100755
--- a/Models/EmployeeMapper.php
+++ b/Models/EmployeeMapper.php
@@ -51,7 +51,7 @@ final class EmployeeMapper extends DataMapperAbstract
     protected static array $belongsTo = [
         'profile'    => [
             'mapper' => ProfileMapper::class,
-            'self'   => 'hr_staff_profile',
+            'external'   => 'hr_staff_profile',
         ],
     ];
 
@@ -65,8 +65,8 @@ final class EmployeeMapper extends DataMapperAbstract
         'companyHistory' => [
             'mapper'   => EmployeeHistoryMapper::class,
             'table'    => 'hr_staff_history', // @todo: is this requried? This is stored in the mapper already. In other places I'm not using this, either use it everywhere or nowhere. Using the mapper is slower but protects us from table name changes!
-            'external' => 'hr_staff_history_staff',
-            'self'     => null,
+            'self' => 'hr_staff_history_staff',
+            'external'     => null,
         ],
     ];