diff --git a/core/cmdbchangeop.class.inc.php b/core/cmdbchangeop.class.inc.php
index 8dd79b478..6801573a3 100644
--- a/core/cmdbchangeop.class.inc.php
+++ b/core/cmdbchangeop.class.inc.php
@@ -492,6 +492,71 @@ class CMDBChangeOpSetAttributeText extends CMDBChangeOpSetAttribute
 	}
 }
 
+/**
+ * Record the modification of a multiline string (text)
+ *
+ * @package     iTopORM
+ */
+class CMDBChangeOpSetAttributeLongText extends CMDBChangeOpSetAttribute
+{
+	public static function Init()
+	{
+		$aParams = array
+		(
+			"category" => "core/cmdb",
+			"key_type" => "",
+			"name_attcode" => "change",
+			"state_attcode" => "",
+			"reconc_keys" => array(),
+			"db_table" => "priv_changeop_setatt_longtext",
+			"db_key_field" => "id",
+			"db_finalclass_field" => "",
+		);
+		MetaModel::Init_Params($aParams);
+		MetaModel::Init_InheritAttributes();
+		MetaModel::Init_AddAttribute(new AttributeLongText("prevdata", array("allowed_values"=>null, "sql"=>"prevdata", "default_value"=>"", "is_null_allowed"=>true, "depends_on"=>array())));
+
+		// Display lists
+		MetaModel::Init_SetZListItems('details', array('date', 'userinfo', 'attcode')); // Attributes to be displayed for the complete details
+		MetaModel::Init_SetZListItems('list', array('date', 'userinfo', 'attcode')); // Attributes to be displayed for a list
+	}
+	
+	/**
+	 * Describe (as a text string) the modifications corresponding to this change
+	 */	 
+	public function GetDescription()
+	{
+		// Temporary, until we change the options of GetDescription() -needs a more global revision
+		$bIsHtml = true;
+		
+		$sResult = '';
+		$oTargetObjectClass = $this->Get('objclass');
+		$oTargetObjectKey = $this->Get('objkey');
+		$oTargetSearch = new DBObjectSearch($oTargetObjectClass);
+		$oTargetSearch->AddCondition('id', $oTargetObjectKey, '=');
+
+		$oMonoObjectSet = new DBObjectSet($oTargetSearch);
+		if (UserRights::IsActionAllowedOnAttribute($this->Get('objclass'), $this->Get('attcode'), UR_ACTION_READ, $oMonoObjectSet) == UR_ALLOWED_YES)
+		{
+			if (MetaModel::IsValidAttCode($this->Get('objclass'), $this->Get('attcode')))
+			{
+				$oAttDef = MetaModel::GetAttributeDef($this->Get('objclass'), $this->Get('attcode'));
+				$sAttName = $oAttDef->GetLabel();
+			}
+			else
+			{
+				// The attribute was renamed or removed from the object ?
+				$sAttName = $this->Get('attcode');
+			}
+			$sTextView = '<div>'.$this->GetAsHtml('prevdata').'</div>';
+
+			//$sDocView = $oPrevDoc->GetDisplayInline(get_class($this), $this->GetKey(), 'prevdata');
+			$sResult = Dict::Format('Change:AttName_Changed_PreviousValue_OldValue', $sAttName, $sTextView);
+		}
+		return $sResult;
+	}
+}
+
 /**
  * Record the modification of a caselog (text)
  * since the caselog itself stores the history
diff --git a/core/cmdbobject.class.inc.php b/core/cmdbobject.class.inc.php
index 27b0a900b..7cc6224b8 100644
--- a/core/cmdbobject.class.inc.php
+++ b/core/cmdbobject.class.inc.php
@@ -282,6 +282,21 @@ abstract class CMDBObject extends DBObject
 				$oMyChangeOp->Set("lastentry", $value->GetLatestEntryIndex());
 				$iId = $oMyChangeOp->DBInsertNoReload();
 			}
+			elseif ($oAttDef instanceOf AttributeLongText)
+			{
+				// Data blobs
+				$oMyChangeOp = MetaModel::NewObject("CMDBChangeOpSetAttributeLongText");
+				$oMyChangeOp->Set("objclass", get_class($this));
+				$oMyChangeOp->Set("objkey", $this->GetKey());
+				$oMyChangeOp->Set("attcode", $sAttCode);
+
+				if (!is_null($original) && ($original instanceof ormCaseLog))
+				{
+					$original = $original->GetText();
+				}
+				$oMyChangeOp->Set("prevdata", $original);
+				$iId = $oMyChangeOp->DBInsertNoReload();
+			}
 			elseif ($oAttDef instanceOf AttributeText)
 			{
 				// Data blobs