diff --git a/synchro/synchrodatasource.class.inc.php b/synchro/synchrodatasource.class.inc.php
index 23350a1765..0005979e78 100644
--- a/synchro/synchrodatasource.class.inc.php
+++ b/synchro/synchrodatasource.class.inc.php
@@ -288,6 +288,7 @@ class SynchroDataSource extends cmdbAbstractObject
 	function UpdateSynoptics(id)
 	{
 		var aValues = aSynchroLog[id];
+		if (aValues == undefined) return;
 		
 		for (var sKey in aValues)
 		{