diff --git a/includes/diff.inc b/includes/diff.inc
index 1fb5600..e065d31 100644
--- a/includes/diff.inc
+++ b/includes/diff.inc
@@ -227,7 +227,7 @@ function cps_render_changed_entity($entity_type, $change, $entity) {
       $entity->cps_changeset_to_diff_against = CPS_PUBLISHED_CHANGESET;
     }
     else {
-      $entity->cps_changeset_to_diff_against = db_query("SELECT changeset_id FROM {cps_changeset} WHERE published < :published ORDER by published DESC LIMIT 1", [':published' => $entity->published])->fetchField();
+      $entity->cps_changeset_to_diff_against = db_query("SELECT changeset_id FROM {cps_changeset} WHERE published < :published ORDER by published DESC LIMIT 1", array(':published' => $entity->published))->fetchField();
     }
   }