diff --git a/de.hftstuttgart.cityunits.model/model/Quantities.ecore b/de.hftstuttgart.cityunits.model/model/Quantities.ecore
index 4bb2f9ac5ee3b7caa81d952e5008c2b56c8e007a..537a85e9a46d54d52fbde5ad52b7138683516af0 100644
--- a/de.hftstuttgart.cityunits.model/model/Quantities.ecore
+++ b/de.hftstuttgart.cityunits.model/model/Quantities.ecore
@@ -4,7 +4,7 @@
   <eClassifiers xsi:type="ecore:EDataType" name="QuantityDouble" instanceClassName="de.hftstuttgart.cityunits.model.NullableQuantity"/>
   <eClassifiers xsi:type="ecore:EDataType" name="QuantityLong" instanceClassName="de.hftstuttgart.cityunits.model.NullableQuantity"/>
   <eClassifiers xsi:type="ecore:EDataType" name="Fraction" instanceClassName="java.lang.Double">
-    <eAnnotations source="https:///org/eclipse/emf/ecore/util/ExtendedMetaData">
+    <eAnnotations source="http:///org/eclipse/emf/ecore/util/ExtendedMetaData">
       <details key="minInclusive" value="0.0"/>
       <details key="maxInclusive" value="1.0"/>
     </eAnnotations>