diff --git a/productMods/edit/forms/personHasPositionHistory.jsp b/productMods/edit/forms/personHasPositionHistory.jsp
index 52987ea5..4904d8ed 100644
--- a/productMods/edit/forms/personHasPositionHistory.jsp
+++ b/productMods/edit/forms/personHasPositionHistory.jsp
@@ -49,8 +49,6 @@
 <c:set var="orgClass" value="http://xmlns.com/foaf/0.1/Organization" />
 
 <%-- Define predicates used in n3 assertions and sparql queries --%>
-<c:set var="startYearPred" value="${vivoCore}startYear" />
-<c:set var="endYearPred" value="${vivoCore}endYear" />
 <c:set var="positionInOrgPred" value="${vivoCore}positionInOrganization" />
 <c:set var="orgForPositionPred" value="${vivoCore}organizationForPosition" />