diff --git a/productMods/templates/freemarker/body/partials/individual/propStatement-dateTimeInterval.ftl b/productMods/templates/freemarker/body/partials/individual/propStatement-dateTimeInterval.ftl
index bb3cd74e..c1254b6a 100644
--- a/productMods/templates/freemarker/body/partials/individual/propStatement-dateTimeInterval.ftl
+++ b/productMods/templates/freemarker/body/partials/individual/propStatement-dateTimeInterval.ftl
@@ -7,6 +7,5 @@
 <#if ! statement.valueStart?? && ! statement.valueEnd??>
     <a href="${profileUrl(statement.dateTimeInterval)}">${statement.intervalName}</a> (incomplete date/time interval data)
 <#else>
-    ${dt.dateTimeIntervalLong(statement.dateTimeStart!, statement.precisionStart!, 
-                              statement.dateTimeEnd!, statement.precisionEnd!)}
+    ${dt.dateTimeIntervalLong("${statement.dateTimeStart!}", "${statement.precisionStart!}", "${statement.dateTimeEnd!}", "${statement.precisionEnd!}")}
 </#if>
\ No newline at end of file