diff --git a/core/metamodel.class.php b/core/metamodel.class.php
index 1a3794ce1..b49c15eda 100644
--- a/core/metamodel.class.php
+++ b/core/metamodel.class.php
@@ -1753,6 +1753,11 @@ abstract class MetaModel
 				self::$m_aIgnoredAttributes[$sTargetClass][$oAtt->GetCode()] = $sRemoteClass;
 				return;
 			}
+			elseif ($oAtt->IsIndirect() && !self::IsValidAttCode($sRemoteClass, $oAtt->GetExtKeyToRemote()))
+			{
+				self::$m_aIgnoredAttributes[$sTargetClass][$oAtt->GetCode()] = $sRemoteClass;
+				return;
+			}
 		}
 		elseif($oAtt->IsExternalKey())
 		{