diff --git a/public/FWEBuilding/v2.1/XSD/FWEBuilding.xsd b/public/FWEBuilding/v2.1/XSD/FWEBuilding.xsd
index f993147215e15653c0fc5eae1556296203e153a3..c40517ed19e002affbe119fb6970b1b7b03ea096 100644
--- a/public/FWEBuilding/v2.1/XSD/FWEBuilding.xsd
+++ b/public/FWEBuilding/v2.1/XSD/FWEBuilding.xsd
@@ -14,7 +14,7 @@
           <element minOccurs="0" name="surveyYear" type="integer"/>
           <element maxOccurs="unbounded" minOccurs="0" name="surveyYearVersion" type="double"/>
           <element maxOccurs="unbounded" minOccurs="0" name="surveyDescription" type="string"/>
-          <element minOccurs="0" name="population" type="integer"/>
+          <element minOccurs="0" name="population" type="positiveInteger"/>
           <element minOccurs="0" name="buildingFootprintArea" type="gml:AreaType"/>
           <element minOccurs="0" name="totalFloorArea" type="gml:AreaType"/>
           <element maxOccurs="unbounded" minOccurs="0" name="foodSurvey" type="FWEB:FoodSurveyPropertyType">