diff --git a/LeCountdown/Model/LeCountdown.xcdatamodeld/LeCountdown.0.6.4.xcdatamodel/contents b/LeCountdown/Model/LeCountdown.xcdatamodeld/LeCountdown.0.6.4.xcdatamodel/contents
index 07a48ef..2d7b372 100644
--- a/LeCountdown/Model/LeCountdown.xcdatamodeld/LeCountdown.0.6.4.xcdatamodel/contents
+++ b/LeCountdown/Model/LeCountdown.xcdatamodeld/LeCountdown.0.6.4.xcdatamodel/contents
@@ -2,7 +2,7 @@
 <model type="com.apple.IDECoreDataModeler.DataModel" documentVersion="1.0" lastSavedToolsVersion="21513" systemVersion="22A400" minimumToolsVersion="Automatic" sourceLanguage="Swift" usedWithCloudKit="YES" userDefinedModelVersionIdentifier="">
     <entity name="AbstractSoundTimer" representedClassName="AbstractSoundTimer" isAbstract="YES" parentEntity="AbstractTimer" elementID="soundList" syncable="YES">
         <attribute name="confirmationSoundList" optional="YES" attributeType="String"/>
-        <attribute name="playableIds" optional="YES" attributeType="String" elementID="soundList"/>
+        <attribute name="playableIds" optional="YES" attributeType="String"/>
         <attribute name="repeatCount" attributeType="Integer 16" defaultValueString="0" usesScalarValueType="YES"/>
     </entity>
     <entity name="AbstractTimer" representedClassName="AbstractTimer" isAbstract="YES" syncable="YES">