diff --git a/core/metamodel.class.php b/core/metamodel.class.php
index 4db2c125d..6673bdbf4 100644
--- a/core/metamodel.class.php
+++ b/core/metamodel.class.php
@@ -333,7 +333,7 @@ abstract class MetaModel
 	{
 		self::_check_subclass($sClass);
 		$sOql = self::$m_aClassParams[$sClass]['obsolescence_expression'];
-		$oRet = Expression::FromOQL($sOql);
+		$oRet = Expression::FromOQL("COALESCE($sOql, 0)");
 		return $oRet;
 	}
 	final static public function GetNameSpec($sClass)
diff --git a/datamodels/2.x/itop-config-mgmt/datamodel.itop-config-mgmt.xml b/datamodels/2.x/itop-config-mgmt/datamodel.itop-config-mgmt.xml
index c4f47f89f..be0387a5d 100755
--- a/datamodels/2.x/itop-config-mgmt/datamodel.itop-config-mgmt.xml
+++ b/datamodels/2.x/itop-config-mgmt/datamodel.itop-config-mgmt.xml
@@ -30,7 +30,7 @@
           </attributes>
         </reconciliation>
         <obsolescence>
-          <condition><![CDATA[COALESCE(status='inactive',0)]]></condition>
+          <condition><![CDATA[status = 'inactive']]></condition>
         </obsolescence>
       </properties>
       <fields>
@@ -137,7 +137,7 @@
           </attributes>
         </reconciliation>
         <obsolescence>
-          <condition><![CDATA[COALESCE(status='inactive',0)]]></condition>
+          <condition><![CDATA[status = 'inactive']]></condition>
         </obsolescence>
       </properties>
       <fields>
@@ -897,7 +897,7 @@
           </attributes>
         </reconciliation>
         <obsolescence>
-          <condition><![CDATA[COALESCE(status='obsolete',0)]]></condition>
+          <condition><![CDATA[status = 'obsolete']]></condition>
         </obsolescence>
       </properties>
       <fields>
@@ -1667,7 +1667,7 @@
           </attributes>
         </reconciliation>
         <obsolescence>
-          <condition><![CDATA[COALESCE(status='obsolete',0)]]></condition>
+          <condition><![CDATA[status = 'obsolete']]></condition>
         </obsolescence>
       </properties>
       <fields>
@@ -2943,7 +2943,7 @@
           </attributes>
         </reconciliation>
         <obsolescence>
-          <condition><![CDATA[COALESCE(status='inactive',0)]]></condition>
+          <condition><![CDATA[status='inactive']]></condition>
         </obsolescence>
       </properties>
       <fields>
@@ -3102,7 +3102,7 @@
           </attributes>
         </reconciliation>
         <obsolescence>
-          <condition><![CDATA[COALESCE(status='inactive',0)]]></condition>
+          <condition><![CDATA[status = 'inactive']]></condition>
         </obsolescence>
       </properties>
       <fields>
@@ -3228,7 +3228,7 @@
           </attributes>
         </reconciliation>
         <obsolescence>
-          <condition><![CDATA[COALESCE(status='inactive',0)]]></condition>
+          <condition><![CDATA[status = 'inactive']]></condition>
         </obsolescence>
       </properties>
       <fields>
diff --git a/datamodels/2.x/itop-virtualization-mgmt/datamodel.itop-virtualization-mgmt.xml b/datamodels/2.x/itop-virtualization-mgmt/datamodel.itop-virtualization-mgmt.xml
index e439375bc..3d0aa51e7 100644
--- a/datamodels/2.x/itop-virtualization-mgmt/datamodel.itop-virtualization-mgmt.xml
+++ b/datamodels/2.x/itop-virtualization-mgmt/datamodel.itop-virtualization-mgmt.xml
@@ -26,7 +26,7 @@
           </attributes>
         </reconciliation>
         <obsolescence>
-          <condition><![CDATA[COALESCE(status='obsolete',0)]]></condition>
+          <condition><![CDATA[status = 'obsolete']]></condition>
         </obsolescence>
       </properties>
       <fields>
@@ -283,7 +283,7 @@
           </attributes>
         </reconciliation>
         <obsolescence>
-          <condition><![CDATA[COALESCE(status='obsolete' OR (server_id!=0 AND server_id_obsolescence_flag),0)]]></condition>
+          <condition><![CDATA[status = 'obsolete' OR (server_id != 0 AND server_id_obsolescence_flag)]]></condition>
         </obsolescence>
       </properties>
       <fields>