diff --git a/pkg/accesscontrol/access_store.go b/pkg/accesscontrol/access_store.go
index a4ece860..51f7269b 100644
--- a/pkg/accesscontrol/access_store.go
+++ b/pkg/accesscontrol/access_store.go
@@ -76,11 +76,11 @@ func (l *AccessStore) CacheKey(user user.Info) string {
 	l.users.addRolesToHash(d, user.GetName())
 
 	groupBase := user.GetGroups()
-	groups := make([]string, 0, len(groupBase))
+	groups := make([]string, len(groupBase))
 	copy(groups, groupBase)
-
 	sort.Strings(groups)
-	for _, group := range user.GetGroups() {
+
+	for _, group := range groups {
 		l.groups.addRolesToHash(d, group)
 	}