diff --git a/classes/badgeinfo.php b/classes/badgeinfo.php
index e9f6d36..49a4b80 100644
--- a/classes/badgeinfo.php
+++ b/classes/badgeinfo.php
@@ -818,7 +818,7 @@ class badgeinfo {
         $sql = "SELECT DISTINCT b.id from {badge} b
             INNER JOIN {badge_criteria} crit ON b.id = crit.badgeid
             INNER JOIN {badge_criteria_param} p on p.critid = crit.id
-            INNER JOIN {competency_coursecomp} cc on cc.competencyid = CAST(COALESCE(p.value, 0) as INTEGER)
+            INNER JOIN {competency_coursecomp} cc on cc.competencyid = CAST(p.value as INTEGER)
             WHERE cc.courseid = :courseid AND crit.criteriatype $ctypesql $conditions";
 
         $competencyrelids = $DB->get_fieldset_sql($sql, $sqlparams);