diff --git a/library/Icingadb/Model/State.php b/library/Icingadb/Model/State.php
index f2b871a7..5e7073ee 100644
--- a/library/Icingadb/Model/State.php
+++ b/library/Icingadb/Model/State.php
@@ -9,6 +9,7 @@ use Icinga\Module\Icingadb\Model\Behavior\Timestamp;
 use Icinga\Module\Icingadb\Model\Behavior\VolatileState;
 use ipl\Orm\Behaviors;
 use ipl\Orm\Model;
+use ipl\Sql\Expression;
 
 /**
  * Base class for the {@link HostState} and {@link ServiceState} models providing common columns.
@@ -42,7 +43,9 @@ abstract class State extends Model
             'latency',
             'timeout',
             'check_source',
-            'scheduling_source',
+            'scheduling_source' => new Expression( // TODO: Do as told
+                "'remove me if https://github.com/Icinga/icingadb/issues/160 is done'"
+            ),
             'last_update',
             'last_state_change',
             'next_check',
diff --git a/library/Icingadb/Model/StateHistory.php b/library/Icingadb/Model/StateHistory.php
index e543650d..ea360fb9 100644
--- a/library/Icingadb/Model/StateHistory.php
+++ b/library/Icingadb/Model/StateHistory.php
@@ -8,6 +8,7 @@ use Icinga\Module\Icingadb\Model\Behavior\Timestamp;
 use ipl\Orm\Behaviors;
 use ipl\Orm\Model;
 use ipl\Orm\Relations;
+use ipl\Sql\Expression;
 
 /**
  * Model for table `state_history`
@@ -46,7 +47,9 @@ class StateHistory extends Model
             'long_output',
             'max_check_attempts',
             'check_source',
-            'scheduling_source'
+            'scheduling_source' => new Expression( // TODO: Do as told
+                "'remove me if https://github.com/Icinga/icingadb/issues/160 is done'"
+            )
         ];
     }