diff --git a/api/endpoints/do_server.php b/api/endpoints/do_server.php
index 49591a6..9c8c8b9 100644
--- a/api/endpoints/do_server.php
+++ b/api/endpoints/do_server.php
@@ -49,7 +49,7 @@ $siteLabels = [
 ];
 $sites = [];
 $rows  = JarvisDB::query(
-    "SELECT fact_key, fact_value FROM kb_facts WHERE category=sites AND updated_at > DATE_SUB(NOW(), INTERVAL 15 MINUTE) ORDER BY fact_key"
+    "SELECT fact_key, fact_value FROM kb_facts WHERE category='sites' AND updated_at > DATE_SUB(NOW(), INTERVAL 15 MINUTE) ORDER BY fact_key"
 );
 foreach ($rows as $r) {
     $label = $siteLabels[$r["fact_key"]] ?? $r["fact_key"];