diff --git a/core/dbobjectsearch.class.php b/core/dbobjectsearch.class.php
index 83b4e9ea4..c42203234 100644
--- a/core/dbobjectsearch.class.php
+++ b/core/dbobjectsearch.class.php
@@ -1074,7 +1074,7 @@ class DBObjectSearch extends DBSearch
 		$oSQLQuery = $this->MakeSQLObjectQuery($oBuild, null, array());
 		$oSQLQuery->SetCondition($oBuild->m_oQBExpressions->GetCondition());
 		$oSQLQuery->SetSelect($oBuild->m_oQBExpressions->GetSelect());
-		$aScalarArgs = array_merge(MetaModel::PrepareQueryArguments($aArgs), $this->GetInternalParams());
+		$aScalarArgs = MetaModel::PrepareQueryArguments($aArgs, $this->GetInternalParams());
 		return $oSQLQuery->RenderDelete($aScalarArgs);
 	}
 
@@ -1086,7 +1086,7 @@ class DBObjectSearch extends DBSearch
 		$oSQLQuery = $this->MakeSQLObjectQuery($oBuild, null, $aValues);
 		$oSQLQuery->SetCondition($oBuild->m_oQBExpressions->GetCondition());
 		$oSQLQuery->SetSelect($oBuild->m_oQBExpressions->GetSelect());
-		$aScalarArgs = array_merge(MetaModel::PrepareQueryArguments($aArgs), $this->GetInternalParams());
+		$aScalarArgs = MetaModel::PrepareQueryArguments($aArgs, $this->GetInternalParams());
 		return $oSQLQuery->RenderUpdate($aScalarArgs);
 	}
 
diff --git a/core/dbsearch.class.php b/core/dbsearch.class.php
index c4830deac..cf54ab066 100644
--- a/core/dbsearch.class.php
+++ b/core/dbsearch.class.php
@@ -377,7 +377,7 @@ abstract class DBSearch
 		$aAttToLoad = array();
 		$oSQLQuery = $oQueryFilter->GetSQLQuery(array(), $aArgs, $aAttToLoad, null, 0, 0, false, $aGroupByExpr);
 
-		$aScalarArgs = array_merge(MetaModel::PrepareQueryArguments($aArgs), $this->GetInternalParams());
+		$aScalarArgs = MetaModel::PrepareQueryArguments($aArgs, $this->GetInternalParams());
 		try
 		{
 			$bBeautifulSQL = self::$m_bTraceQueries || self::$m_bDebugQuery || self::$m_bIndentQueries;
diff --git a/core/metamodel.class.php b/core/metamodel.class.php
index b7fbdb711..f64e8040a 100644
--- a/core/metamodel.class.php
+++ b/core/metamodel.class.php
@@ -2456,12 +2456,13 @@ abstract class MetaModel
 	 * - current_user (DBObject)
 	 *
 	 * @param array $aArgs Context arguments (some can be persistent objects)
-	 * @param array $aScalarArgs Other query parameters (only scalars allowed here)
+	 * @param array $aMoreArgs Other query parameters
 	 * @return array
 	 */
-	public static function PrepareQueryArguments($aArgs, $aScalarArgs = array())
+	public static function PrepareQueryArguments($aArgs, $aMoreArgs = array())
 	{
-		foreach($aArgs as $sArgName => $value)
+		$aScalarArgs = array();
+		foreach(array_merge($aArgs, $aMoreArgs) as $sArgName => $value)
 		{
 			if (self::IsValidObject($value))
 			{